Taking a Lie Detector Test in Birmingham
Taking a Lie Detector Test in Birmingham
Are you considering taking a lie detector test in Birmingham? Lie detector tests are becoming increasingly popular for a wide range of purposes, from resolving personal disputes to validating consumer or employee claims and interviews. If you’re new to the concept and wondering what it’s all about and how it works, then you’ve come to the right place! In this blog post, we’ll explain everything you need to know about taking a lie detector test at one of our Birmingham-based testing centres. We’ll cover topics such as the science behind these tests, what types of questions can be asked during the testing session, expected outcomes and more. Read on to find out if a polygraph is right for your situation – but first, let’s get into some background information…
What to expect when taking a lie detector test in Birmingham
Lie Detectors UK is the premier Lie Detector Test provider in Birmingham. They provide offers comprehensive Lie Detector Tests conducted by accredited examiners. Those seeking Lie Detector Tests will experience a safe and secure environment with trained staff and private rooms for maximum discretion and privacy. Lie Detector Test results are completely confidential, so you can trust that Lie Detectors UK will provide you with accurate and reliable results. Taking a Lie Detector Test in Birmingham is invaluable access to ascertaining the truth and uncovering matters of importance.
The importance of accuracy when taking a lie detector test
UK Polygraph Association Director Jason Hubble highlights the importance of accuracy when taking a lie detector test. “It’s essential that all information is accurate,” says Hubble, as he encourages an honest and reliable approach towards such tests, to ensure fairness and a more effective result. As the UK Polygraph Association works to uphold standards of best practice amongst UK polygraph examiners, accuracy is paramount for successful outcomes for concerned parties. Even with empirical research showing the reliability of polygraph testing and its use in procurement settings, evidence still has to be gathered carefully and so candidates entering into this process should remain fully truthful.
What happens if you fail the lie detector test in Birmingham
In Birmingham, failing a lie detector test can have a variety of consequences. Clients undergoing such tests should take all necessary precautions to avoid failure by ensuring they are being truthful at all times and providing honest testimony that accurately reflects their involvement in the matter. The examiner will discuss the case fully with you both pre and post-test and will fully discuss the results with you.
Ensuring the validity of results when taking a lie detector test
Ensuring accurate and reliable results when taking a lie detector test is integral. The quality of the results relies on an APA Qualified Examiner and their ability to interpret the data captured during the test professionally. It is important to note that APA Qualified Examiners have undergone rigorous training to become qualified, including psychological screening and theoretical knowledge tests. Additionally, APA Qualified Examiners must adhere to established APA guidelines to underwrite the accuracy of the results from a lie detector test.
The benefits of taking a lie detector test for employers and employees alike
Organizational leaders are increasingly opting to use lie detector tests for their employees for several reasons. This type of testing offers employers an effective way to confirm employee information accurately, as well as deter dishonesty within the team. Employees also benefit from this form of assessment, gaining assurance that lies and deceit will be detected by management so that their hard work is valued and handled responsibly. Furthermore, it gives each individual the opportunity to have a reliable record of their trustworthiness in an organization. In all, lie detector tests are emerging as a beneficial solution for both employers and employees alike; providing a secure system that assures accurate checks whilst respecting employee privacy.
How to prepare for a lie detector test in Birmingham
When preparing for a lie detector test in Birmingham, there are several practical steps to take. It is essential to provide as much information and detail as possible to the polygraph examiner so that they can properly administer the test. Additionally, it is important to become familiar with the specific questions that will be asked during the test, as well as any guidelines or protocols relating to said questions. Finally, it is beneficial to emotionally prepare yourself; while taking a lie detector test may make some people anxious, understanding the purpose of polygraph examinations and having confidence in your truthfulness can help one stay calm and collected throughout the process. Taking all of these steps into consideration will undoubtedly increase one’s chances for success when undergoing a lie detector test in Birmingham.
Taking a lie detector test in Birmingham can be a daunting experience if you are unprepared. Knowing what to expect beforehand and being aware of the importance of accuracy will help ensure the validity of the results. Lie Detectors UK will fully discuss your case and answer all questions before you make a booking, you speak directly to an examiner. Employers and employees can reap great benefits from taking a lie detector test, as it can foster an atmosphere of trust and contribute to any investigation. And a test can put trust back into a relationship. Preparing ahead of time is key, as it can help ease any anxiety or confusion associated with taking a lie detector test in Birmingham. In conclusion, understanding all relevant information related to prepping for and taking the lie detector session in Birmingham is essential for ensuring its successful outcome.Read More
Lie Detector Test Birmingham
The Essential Guide for Choosing the Right Lie Detector Test Birmingham
When you need to find the best lie detector test Birmingham, it can be tough to know where to start. With so many options available, how do you know which one is right for you? In this guide, we will provide information on what to look for when choosing a lie detector test as well as some of the most reputable providers in Birmingham.
When choosing a lie detector test in Birmingham, consider the following factors:
When choosing a lie detector test Birmingham, consider the following factors:
1. What is the purpose of the test?
Are you looking to use the lie detector test for personal or professional reasons? If you’re looking to use it for personal reasons, then you might not need to be as concerned with the results being 100% accurate. However, if you’re looking to use the lie detector test for professional reasons, then you’ll want to make sure that the results are as accurate as possible by hiring a qualified professional.
2. What is your budget?
Lie detector tests can vary widely in price, depending on who is administering the test and how many questions are asked. If you have a limited budget, then you might want to consider a less expensive option. However, if accuracy is your top priority, then you’ll want to make sure that you choose a lie detector test Birmingham with Lie Detectors UK.
3. How many people will be taking the test?
Is a discount offered for muliple tests as Lie Detectors UK do ?
The reputation of the provider: Only choose a reputable provider with a good track record.
A reputable provider will have a good track record of providing quality service. They will also be able to provide you with references from past clients. A reputable provider will be upfront and honest with you about their fees and what they include. They should also be willing to answer any questions you have. Lie Detectors UK have been in business over 10 years, owner by a UK Polygraph Association Director so you know you in good hands.
The experience of the examiner: Make sure the examiner is experienced and qualified.
When it comes to a lie detectort test in Birmingham, experience and qualifications is key. Make sure the tester you hire is experienced and qualified – it could mean the difference between a successful test and one that falls short.
An experienced tester will be a member of the UK Polygraph Association, be able to identify potential problems early on and have the necessary skills to find solutions. They will also be able to communicate effectively with you and explain the process, which is essential for a smooth test and accurate results.
Qualifications are also important, as they ensure that the tester has the theoretical knowledge required to do their job effectively. However, qualifications alone are not enough – a good tester will also have practical experience so ask how long they have been in the industry.
Do they use the latest equipment and techniques? A UKPA Examiner will .
The type of test: Choose the right type of test for your needs.
There are a few different types of tests that can be administered, depending on what type situation. A single issue test is by far the most accurate and a good exmainer and company will always guide you towartds accuracy first. Mosts tests run in Birmingham are for proof of innocence, infidelity or theft, although we do test for allegations as well.
If you’re looking for the most accurate tests available, single issue tests are your best bet. These tests offer a range of benefits compared to other types of tests, including greater accuracy and reliability. In this blog post, we’ll discuss some of the advantages of single issue tests and cover the various types of tests offered in Birmingham.
When it comes to testing, accuracy is key. This means taking steps to ensure that all test results are as accurate as possible. Some ways to ensure accuracy during testing include using new and up-to-date equipment, calibrating instruments regularly, and following strict safety protocols when conducting experiments. The more reliable and accurate the results are, the better decisions can be made based on those results.
When it comes to single issue tests in Birmingham, there are many different types to choose from. For example, proof of innocence or infidelity tests can help determine whether someone is telling the truth or not about a particular situation. Theft allegation tests can also be used to identify whether someone has stolen something or not. Both types of tests have their own advantages and disadvantages, so it’s important to understand which type is best suited for your specific needs before making a decision.
Ensuring Accuracy And Choosing The Right Test Type For Your Needs
Single issue tests in Birmingham provide some of the most accurate test results available today. Taking steps to ensure accuracy during testing is essential for ensuring that you get reliable results every time. Additionally, understanding the different types of single issue tests offered in Birmingham is key for choosing the right test for your particular situation. By following these guidelines you can make sure you get the most accurate test results possible so that you can make informed decisions based on those results!
The cost: Get quotes for a lie detector test Birmingham from several providers to compare costs.
A lie detector test Birmingham can cost anywhere from £399 to £499, depending on the provider you choose. There are a few things to consider when deciding which provider to use for your lie detector test. First, you’ll want to make sure that the provider is accredited and has a good reputation. Second, you’ll want to make sure that the cost of the test is reasonable. And finally, you’ll want to make sure that the provider offers a money-back guarantee if the test results are inconclusive.
When choosing a lie detector test Birmingham, there are several factors to consider to ensure you choose the right provider for your needs. Firstly, it is important to consider the reputation of the provider and check that they have a good track record. Secondly, you should make sure the tester is experienced and qualified UKPA member. Thirdly, you need to choose the right type of test for your needs. Finally, it is also important to compare costs from different providers before making a decision.Read More
So What Exactly Is A Polygraph Or Lie Detector Test ?
What is a Polygraph or Lie Detector Test ?
In case you watch daytime TV, undoubtedly you will have seen a show like Jeremy Kyle in which the host utilizes a lie indicator to demonstrate or invalidate, that one of the visitors is lying. It perpetually fixates on whether somebody has swindled, or stolen from a companion or relative, or brought about criminal harm – all exceptionally emotional and awesome for TV evaluations.
In any case, while you will have heard the term lie detector, or polygraph, not everybody really realizes what this involves or even what the hardware resembles. What’s more, on account of the previously mentioned appear, this is in light of current circumstances – everything adds to the demeanor of puzzle. This “mysterious” machine which can get inside the person to be tested body and really read their brains!
Lie Detector Test Near Me
We offer polygraph lie detector tests in locations UK Nationwide, the most popular areas are Lie Detector Testing in London, Lie Detector Testing in Birmigham, Lie Detector Testing in Liverpool and Lie Detector Testing in Kent.
If just it was so mysterious. Be that as it may, in the same way as other things which entrance us, it is immovably established in science.
Polygraph gear comprises of a few sections.
The Pneumograph comprises of two elastic tubes which are connected to the subject’s upper body.
A Blood Pressure Cuff is put around the highest point of the subject’s arm.
The GSR skin sensor measure how much the subject is sweating.
The Plesmograph measures blood volume.
The screen gets the greater part of the physiological markers, which we will broadly expound in a minute, and records them, either (verifiably) on a long segment of paper or, a great deal more probable, a PC screen. The Examiner is the master who unravels the outcomes.
What Does the Equipment Do?
When we lie, our bodies respond automatically. We have no influence over our bodies involuntary responses. The hardware specified above measures these reactions and records them.So we should take a gander at each of those segments in more detail.
The Pneumograph comprises of two empty elastic tubes. The elastic tubes are loaded with air and put around the subject’s midriff. As the subject inhales, the air in the tubes is uprooted, and it is this development of dislodged air which the pneumograph measures. The development will accelerate or back off, contingent upon whether the subject is focused on (lying) or loose (being honest).
The Blood Pressure Cuff is fundamentally the same as the ones utilized by Doctors and Nurses in a surgery or healing center setting, despite the fact that in a polygraph circumstance it will be marginally less expanded, making it more agreeable. When we are being misleading, our heart rate increments and this is gotten by the Blood Pressure Cuff – again because of the air dislodging in the sleeve as every heart beat may be ‘listened’, or all the more precisely “felt” by the sleeve.
The GSR is utilized to quantify discretionary dermal movement, or, to put it all the more just – sweat. The fingertips are unfathomably permeable, so this is the ideal spot to search for sweating, which is another automatic reaction to lying. Little finger plates are connected to two of the subject’s fingers, and these measure the sweat reaction – the more sweat that is available on the plate, the better the power is led.
The Examiner is, doubtlessly, the most essential ‘bit of hardware’ there is in a polygraph examination. The best, most advanced hardware on the planet is not going to yield great outcomes without a profoundly talented inspector to translate the reactions. He or she will nearly watch the reactions recorded, and in addition the general non-verbal communication of the subject all through the examination – group the majority of the reactions together and, with their broad information and preparing, will give an exact outcome. An ineffectively gifted analyst will have the capacity to give no superior to anything a half exactness result – you should flip a coin – so guaranteeing you are getting the most profoundly prepared experts accessible will give you the most precise outcome conceivable.
So how are the Results Deciphered?
Amid a polygraph, or lie locator, test, the subject will be posed a few questions. Some of those inquiries will be ‘standard, for example, ‘is your name … .?’ To which the subject will answer honestly. That will give a base estimation against which to think about the important question, for example, ‘did you take the cash from the drawer?’ If the subject didn’t take the cash, the responses recorded will stay consistent – in any case, if the subject stole the cash, and denies it, there will be a stamped contrast in the responses recorded on the screen. You can read more about addressing procedures on our site.
In any case, does it Really Detect Lies?
Entirely – no. Polygraphs can’t read minds. ‘Lie Detector’ is a name given to the test by the media throughout the years. The word Polygraph, truly deciphered, signifies ‘numerous works’, and this alludes to the more established style machines which used to record the progressions in physiological reactions utilizing an alternate pen for each substantial capacity (breath, heart rate, and sweat). Each pen would climb and down on a long portion of paper, and vacillate with greater markings on the paper when lying. In any case, it wasn’t recording contemptibility, it was recording the developments of the subject – developments which change when the subject is under anxiety.
Cynics will dependably rush to bring up that anybody experiencing a polygraph examination will be anxious, and they would be correct. In any case, as the subject is apprehensive all through the test, the distinctions in reactions is as yet going to happen – they will be more anxious, or pushed, at whatever point they are lying.
In its easiest shape, a polygraph, or lie locator, is a discussion between the subject and the analyst. The main distinction amongst that and a discussion sitting at a bar is that the subject’s reactions are being observed and analyzed – something which is difficult to manage without the utilization of the hardware.
It’s not difficult, it’s not physically awkward, and – as there are just you two in the stay with nobody else tuning in – it isn’t even truly unbalanced. An expert Polygraph inspector will never be judgemental, so whatever your “mystery” is, you won’t be made to feel awful about it. Experts are likewise bound by a strict code of morals, and, unless they have your express consent, they won’t unveil or talk about your outcomes with any other person.
Along these lines, take away the riddle and there you have it. Not all that startling all things considered!Read More
Measurement Theory and Lie Detection
Measurement Theory and Lie Detection
It is sometimes said that it is not possible to actually measure a lie by lie detection. Simplistic and concrete thinkers, and those opposed to the polygraph test, are content to end the discussion at this point and offer the impulsive and erroneous conclusion that scientific tests for lie detection and credibility assessment are not possible. This conclusion is erroneous, a non-sequitur, because many areas of science involve the quantification of phenomena for which direct physical measurement is not possible. The theory of the polygraph test, and lie detection and credibility assessment in general, in fact does not involve the measurement of deception or truth-telling. Nor does it involve the measurement, or recording, of fear or any other specific emotion.
Polygraph Test Accuracy 90% – Read Case Studies and Research
This publication attempts to introduce and orient the reader to measurement theory and its application to the problem of the polygraph and scientific lie detection or credibility assessment testing. The analytic theory of the polygraph is that greater changes in physiological activity are loaded at different types of test stimuli as a function of deception or truth-telling in response to the relevant target stimuli (Nelson, 2015a, 2016; Senter, Weatherman, Krapohl & Horvath, 2010).
In the absence of an analytic theory or hypothesis of polygraph testing, polygraph theories have previously been expressed in terms intended to describe the psychological process or mechanism responsible for reactions to polygraph test stimuli. Although much has been learned about the recordable physiology associated with deception and polygraph testing, less work has been done to investigate psychological hypotheses about deception. In general, the psychological basis of the polygraph is presently assumed to involve a combination of emotional, cognitive and behaviorally conditioned factors (Handler, Shaw & Gougler, 2010; Handler, Deitchman, Kuczek, Hoffman, & Nelson, 2013; Kahn, Nelson & Handler, 2009).
The analytic theory of polygraph testing implies that there are physiological changes associated with deception and truth-telling, and that these changes can be recorded, analyzed, and quantified through the comparison responses to different types of test stimuli. Comparison and quantification are objectives central to measurement theory. Application of measurement theory to the polygraph test will require at least a basic understanding of measurement theory.
Types of measurement Stevens (1946) attempted to provide a framework for understanding types of measurement. At that time, part of the intent was to clarify the selection of statistical and analytic methods associated with different types of measurement data. It was evident almost immediately that the selection of statistical was a more complex endeavor than could be characterized by the reduction of the array of data types and scientific questions to a small set of categories. Nominal scales are without any rank order meaning (e.g., cat, mouse, dog, ostrich, zombie, robot). Mathematical transformation of nominal items is not possible. Ordinal measurements have rank order meaning but have imprecise meaning about the distance between items (e.g., knowing the first, second and third place winners of an ostrich race does not provide information about the difference in race times). Some mathematical transformations are possible with ordinal measurements, with the requirement that they preserve the ordinal information and meaning. Interval scale measurement have both rank order meaning and provide meaningful information about the difference between items. However, the zero point of an ordinal scale is arbitrary and therefor meaningless.
A classical teaching example for the arbitrariness of an interval-scale zero point is a temperature scale for which we have both the Fahrenheit and Celsius scales with different arbitrary zero points, and no expectation that zero means that there is no temperature or no heat to be measured. Ratio measurements include combination of rank order meaning and interval distance meaning along with the notion of a non-arbitrary zero point. In ratio scales measurements zero means none (e.g., no difference). Later, Stevens (1951) offered a set of prescriptions and proscriptions as to the type of statistics that are appropriate for each type of data. The most common form of criticism of Stevens have focused on the fact that it is unnecessarily restrictive (Velleman & Wilkinson, 1993), resulting in the overuse of non-parametric methods that are known to be less efficient than parametric methods (Baker, Hardyck, & Petrinovich, 1966; Borgatta & Bohrnstedt, 1980), and that the type of analysis should be determined by the research question to be asked (Guttman, 1977; Lord, 1953; Tukey, 1961). Luce (1997) asserted directly that measurement theorists today do not accept Stevens’ overly broad definition of measurement. Nevertheless, Stevens’s work provides a useful introduction to the conceptual language and problems of measurement theory.
Measurement theory is an area of science concerned with the investigation of measurability and what makes measurement possible. Helmholtz (1887) began the tradition of scientific and philosophical inquiry into measurement theory by asking the question “why can numbers be assigned to things”, along with other questions such as “what can be understood from those numbers”? According to Campbell (1920/1957), measurement is the process of using numbers to represent qualities. In general, the properties of measurable phenomena must in some ways resemble the properties of numbers. Later work by Suppes (1951) on the differences between measurable and un-measurable phenomena and began to formalize the tradition of measurement theory by clarifying our understanding of the requirements for measurement and gave rise to a modern representational theory of measurement (Diez, 1997; Suppes, 2002; Suppes & Zinnes, 1963; Suppes, Krantz, Luce, & Tversky, 1989; Niederee, 1992). Stated simply, the representational theory of measurement involves the assignment of numbers to physical phenomena such that empirical or observable relationships are preserved.
The existence of order (rank order) relationships between measurable objects is central to the requirements for the measurability of any phenomena. We must be able to quantify one instance of the phenomena as have greater magnitude than another. Another central requirement of measurable phenomena is that there must be a way of combining measurable objects in a way that is analogous to mathematical addition. This is, the addition of measurable phenomena must have a sensible physical interpretation. These are among the main differences between measurable and un-measurable phenomena. For example: measurements can be applied to physical phenomena such as a person’s height, weight, and blood pressure. This is possible because these things involve physical phenomena: the linear or unitized distance from head to toe, the gravitational force on a person’s physical mass, and the unitized pressure required to overcome and occlude arterial pressure relative to a reference point such as average atmospheric pressure at sea level (i.e., 29.92inHg or 760mmHg).
These phenomena can be combined in ways that are in some way analogous to numerical addition. That is, there is some coherent physical interpretation to additive combinations of different instances of these physical phenomena. Time limited events can also be measured. For example: if a person jumps into the air two times and if we mark the physical height of each jump and then combine the two distances, then this is also analogous numerical addition. However, attempts to record physiological changes to polygraph stimuli does not necessarily conform to these requirements for rank order relationships and additivity. The details of how recorded polygraph data can result in the quantification of deception and truth-telling are addressed in the remainder of this publication. Firstly, it has long been established that responses to polygraph stimuli cannot be taken or interpreted directly as a measurement of deception. Nor can responses to polygraph stimuli be interpreted as a recording or measurement of fear or any other specific emotion. Responses to polygraph stimuli are a form of proxy or substitute data for which there is a relationship or correlation with deception and truth-telling.
The reactions and recorded data themselves are neither deception nor truth-telling per se. Secondly, although it may be possible to interpret rank-order the relationships between test stimuli according to the magnitude of response, polygraph recording instrumentation today has not been designed to provide data that satisfy the additivity requirement for measurement data. In other words, attempts to make any sensible additive combination of the actual response data within each of the respiration, cardio, electrodermal and vasomotor sensors is neither intended or established. Instead, polygraph data must be transformed to a more abstracted form before it can be further analyzed and interpreted as to their meaning. Polygraph scoring and analysis algorithms, whether manual or automated, are intended to accomplish and facilitate such transformation, analysis and interpretation.1 Fundamental and derived measurements Some measurements can be referred to as fundamental and require no previously measured phenomena to achieve their determination. The main requirement for a fundamental measurement is that there are some physical phenomena for which there is 1. A major difference between manual an automated polygraph analysis algorithms is that manual scoring protocols were developed during a time when field practitioners did not have access to and were unfamiliar with use of powerful microcomputers. Manual scoring algorithms therefore rely on mathematical transformations that are, of necessity, very simple, if not somewhat blunt. Earlier versions of manual scoring protocols did not make use of normative reference distributions, statistical corrections or confidence intervals. Another major difference is that manual scoring protocols accomplish feature extraction tasks – the extraction of signal information from other recorded information and noise – using subjective visual methods. Automated analysis algorithm will make use of more advanced statistical methods, and will rely on objective and automated feature extraction methods that are less vulnerable to subjective interference.
Some quantity that can be understood as either more or less (e.g. is it heavy) as opposed to phenomena that are better understood as all-or-nothing (e.g., is it an ostrich). If we have two ostriches, it makes some sense to ask a question such as which ostrich is heavier because there is meaningful intuition around the idea that some ostriches are heavier. But it does not make sense to ask the question which is more an ostrich, because there is no meaningful intuition that can be gained from its answer. Being an ostrich is a property, not a quantity. The weight of an ostrich is also a property, and this illustrates that some properties can also be quantities. The physical phenomena of weight or heaviness can be quantified to achieve greater precision than simply saying very heavy or very very heavy when attempting to compare the weight of two ostriches. Without the use of numerical quantities, two different observers might reach two different conclusions about which ostrich is heavier no matter how we attempt to use our descriptive adjectives. Different observers are more likely to reach similar conclusions when using measurements vs. the alternative of not using measurements. The use of measurements permits us to think about, understand, describe and plan the world around us with greater precision, which is to say greater reproducibility. When a measurement is not intended or not expected to be a precise or exact quantity it is sometimes referred to as an estimate.
Probabilities, because they are not expected to be exact, are estimates. Although some may use or express the notion of probabilities subjectively, reproducibility of computational probability estimates is an important difference between the scientific and unscientific use of the concept of probability. Some measurements can be thought of as derived, because these are achieved not through the direct quantification of a physical phenomenon, but through the comparison of an unquantified physical phenomenon with another known physical phenomenon. In principle, we can measure an unknown distance if we have some other distances and angles that are already known. For example, if we place a set of satellites in orbit around the earth we can calculate and know the locations of those satellites relative to a set of objects for which the locations are known on the earth. Then, if we have some means of receiving information from the satellites with known locations, we can use the information from the satellites to calculate and measure our own location if our location is unknown.
This would be like older practices in which if we can calculate the location of objects in the solar system according to a system of counting or quantifying the number of days since a previously observed event, then we can use the location of the object in the solar system. And the location of objects in the solar system could be used, along with a defined system of scientific and mathematical rules, to measure or quantify our current location on the earth. Another example of a derived measurement is the measurement of blood pressure, for which we use our knowledge about atmospheric pressure to quantify our assessments of cardio pressures during the systolic and diastolic phases of the cardiac cycle. Scientific testing as a form of (probabilistic) measurement As it happens, many interesting and important phenomena cannot be either observed directly or are not subject to physical measurement.
This is sometimes because the phenomenon of interest is amorphous (without physical substance), and sometimes because the information does not conform to the order and additivity requirements of measurement. If we want to improve the precision of our assessment and decisions for these phenomena we will need to rely not on measurements but on scientific tests that quantify a phenomenon of interest using statistics and probability theory. Nelson (2015b) provided a description of how a polygraph test, and tests in general, can be thought of as a single subject science experiment. Scientific tests can also be thought of as a form of probabilistic measurement, in which statistical and probability theories are used to quantify a phenomenon that is not amenable to actual measurement.
An example of scientific testing as a form of probabilistic measurement is the testing measurement of amorphous and un-measurable psychological phenomena such as personality and intellectual functioning, during which an observed quantity of data from an individual is compared mathematically to a known quantity in the form of normative reference distribution, or probability reference model, that characterizes our knowledge of what we expect to observe. Reference models can be calculated empirically, through statistical sampling methods, and can also take the form of theoretical reference distributions that characterize our working theories about how the universe, or some small part, works by relying only on facts and information that are subject to mathematical and logical proof. In the case of the polygraph test – for which the basic analytic theory holds that greater changes in physiological activity will be loaded for different types of test stimuli as a function of deception and truth-telling in response to the relevant stimuli – it is not the comparison of relevant and other test questions that forms the basis of our conclusions. Instead, it is the comparison of differences in reactions to relevant and other test questions to a reference distribution that anchors our knowledge about the expected differences in responses to relevant and other questions among deceptive or truthful persons. Ideally, other questions would have the potential to evoke cognitive and emotional activity of similar quality, though perhaps different in magnitude, then the relevant target stimuli. However, it is not necessary that other questions have similar ecological value compared to the relevant stimuli to be a useful and effective basis for statistical comparison. An example of this can be seen in the use of directed
lie-comparison (DLC) questions, for which Blalock, Nelson, Handler & Shaw (2011) provided a summary of the research on their effectiveness (and for which the name DLC should not be taken to imply that response to these questions are actual lies).
Scientific tests as a form of prediction If we want to quantify or improve the accuracy or precision associated with our assessments and conclusions about future events that have not yet occurred – assuming we want to quantify our conclusions now without waiting for the event to occur – then we are once again attempting to quantify a phenomenon that is not amenable to direct observation or measurement. For this we need a test, with which we can make probabilistic conclusions about the future outcome. Tests used in this way can be thought of as a form of scientific prediction. It is not a form of magic or divination. It is a form of probabilistic modeling. An example of the quantification of a future event is the measurement or quantification of risk level for some hazardous event – for which it is implicit that the future event has not yet occurred and therefore cannot be physically quantified or observed. Yet another example, involving the prediction of a future event, will be the quantification of an outcome for an election that has not yet occurred. Both examples – risk outcomes and election outcomes – can involve a future event for which the associated value is binary (e.g., an event has or has not occurred, or an election has been won or not won). At any single point in time, the event has either occurred or has not occurred. We might, at times, want to simply wait to observe the result to achieve a deterministic conclusion. Deterministic observation of an outcome would, of course, obviate any need for testing and quantification. A notable difference between the prediction of risk events and scheduled outcomes is that election outcomes can be expected to occur at a scheduled point in time, at which time it is possible to observe the result. After the scheduled event the outcome is a matter of fact, not probability. Prior to the scheduled event, the outcome can be thought of as a probability, such that there are some factors that are associated with the different possible outcomes. A goal of scientific prediction involves the identification these associated factors so that they can be characterized as random variables and used to develop a predictive test or model. Probabilities associated with the outcomes of scheduled events that have not yet occurred can be thought of as the proportion of outcomes that would occur a certain way, given the random variables that influence the outcome, if it were possible to observe the event over numerous repetitions.
Effectiveness or precision of a test as a predictive model will depend on our ability to correctly understand the random variables related to the possible outcomes. Ultimately, the outcome will be a certainty, and not a probability. Prior to the outcome occurrence, it remains a probability or prediction. When prediction errors occur, their causes can be due either to random variation, or to misunderstanding and mischaracterizing the random variables related to the possible outcomes. Some types of outcomes are expected to occur at an unknown time, or they may not occur at all for very long periods of time. We can think of these outcomes as probabilities. For example: what is the probability that a known criminal offender will re-offend, or what is the probability of an earthquake in Mexico City, or what is the probability of a flood? These events can also be regarded as certainties after they have occurred, and are also subject to some relationship with related factors that are associated with their occurrence. As with other prediction models, identification and characterization of the associated factors is an important objective in the development of risk assessment or risk prediction models. Probabilities associated with risk prediction outcomes can be thought of in terms of frequencies, such that high probability events occur with greater frequency, while low probability events occur with lower frequency. Nearly everything – including events for which our intuition tells us the likelihood is very low – can thought of as a probability. This can, at times, be taken to absurdity.
For example: what is the probability of a zombie horde attack, or what is the probability of a robot apocalypse? For these extreme examples our intuition tells us the probability is either absolute zero or essentially zero, but we can still engage some imagination as to the factors that could become associated with their occurrence. If we expand the period under consideration, then the probabilities associated with rare events can become conceivably greater. For example: what is the probability that an ostrich will fall from the sky? If we expand our dimensions for time and location to the notions of ever and anywhere, we can intuitively understand some non-zero probability associated with an ostrich falling from the sky, along with the kinds of factors that might APA Magazine 2016, 49(6) 90 be associated with its possible occurrence (e.g., emergency ostrich airlift from a flooded ostrich farm). Quantification of future events such as hazards or election outcomes requires that we treat the future outcome in the same manner as any other amorphous phenomena that we may wish to quantify. We treat the future outcome as a probability. Quantification of an outcome is useful only when it is a future outcome – an outcome that has not yet occurred. If information exists, and is available for observation or measurement, then the outcome is not amorphous but is a physical phenomenon. Direct observation or measurement of a future outcome will require that we wait until the future point in time. Until then, if we want to try to predict a future outcome that has not yet occurred we will need to rely on probabilities to describe the amorphous future event. Similarly, observation or measurement of a past event will require that some physical phenomena from the event are available for observation or measurement. If we wish to quantify a past event for which no physical phenomena are available, then we will once again need to rely on probability theory to quantifying the amorphous phenomena. A famous quotation of unknown Danish authorship during the years 1937- 1938 states, [in English] “It is difficult to make predictions, especially about the future.” This simple and humorous quotation reminds us that predictions of all kinds are inherently imperfect, including predications based on scientific test data. Probabilistic conclusions are inherently imperfect. Indeed, they are not expected to be perfect. Probabilistic conclusions are expected only to quantify the margin of uncertainty associated with a conclusion. Statistical predication is an inherently probabilistic and statistical endeavor for which any conclusion is both probably correct and probably incorrect. Conclusions about deception or truth-telling, despite the desire for certainty and infallibility, will be inherently probabilistic and inherently imperfect. Conclusion: scientific polygraph tests as a form of statistical classification Polygraph test results can be thought of a form of prediction that some other evidence exists and can be identified as a basis of evidence to confirm or refute a test result. A simpler and more general way to think about these tests will be as a form of statistical classification. Like other scientific tests, statistical tests intended for classification are not expected to be perfect, infallible or deterministic. Neither are statistical classifications expected to provide the same level of precision as an actual measurement of a physical phenomenon.
Like other probabilistic endeavors, scientific tests intended for classification are expected only to quantify the margin of uncertainty or level of confidence that can be attributed to a conclusion. Most importantly, the method for statistical quantification should be accountable and the results should be reproducible by others. The ultimate measure of effectiveness of a statistical test is not in the achievement of perfection or infallibility, but in the observation of correct and incorrect real-world classifications that conform to our calculated probability estimates. If the basic analytic theory of the polygraph test is incorrect – if no physiological changes are correlated with differences between deception and truth-telling – if all physiological activity in mere random chaos with regard to deception and truth-telling, then humans have virtually no chance of ever known if they are being lied with any precision greater than random chance.
The only way to protect oneself from deception will be to remain cynical and suspicious of all, while trusting no-one. Although perhaps tempting, this will be unrealistic and unsustainable over time. On the other hand, if it is correct that some changes in physiological activity are associated with deception and truthtelling at rates significantly greater than chance, then it is only a matter of time before technologists, engineers, mathematicians, statisticians and data analysts devise some means to increase the availability of useful signal information amid the chaotic noise of other physiological activities and exploit those signals with some new form of scientific credibility assessment or lie detection test. If the polygraph test is ultimately an interrogation and not a scientific test, then measurement theory is of no concern and no consequence to the polygraph profession. But in this case, people will begin to turn to other scientific methodologies when they desire a scientific test for credibility assessment, and the polygraph test may eventually be replaced. On the other hand, if the polygraph test is a scientific test, then it will serve the interests of all for polygraph professionals to become familiar with the basics of measurement theory and the discussion of scientific polygraph test results, including categorical conclusions about deception and truth-telling and conclusions about countermeasures, using the conceptual language of measurement and probability theories. Polygraph conclusions are not physical measurements; they are probability estimates. In the absence of probabilistic thinking applied to the polygraph test, there will be an impulse for some to engage in naïve and unrealistic expectations for deterministic perfection.
There will also be a desire or impulse for some to feign infallibility, due to superior professional wizardry or skill, and this can for a time appear to be an effective marketing strategy. But feigned infallibility will lead to confusion and frustration when it is inevitably observed that testing errors can, and do, occur. A temporary corrective solution to this frustration will be to find fault with the professional, not the test – thereby restoring the false assumption of infallibility, so long as we avoid those less competent wizards less competent experts. Although gratifying for a time, this type of approach is unscientific, and will be unsustainable in the context real-world experience and scientific evidence. Polygraph test result should be understood and described like other scientific test results, using the conceptual language of statistical probabilities. Expression of purportedly scientific conclusions, including conclusions about deception and truth-telling and conclusions about the use of countermeasure, without the use of probability metrics will invite accusation that polygraph is mere subjective pseudoscience cloaked in overconfidence. A scientific approach to polygraph testing will recognize that the task of any test is to quantify a phenomenon probabilistically when direct observation or physical measurement are not possible, and to recognize and make accountable use of the potential for testing error when deciding what value to place upon and how to use or rely upon the test result. Like other scientific tests, polygraph tests are intended to make probabilistic classifications of deception and truth telling in the absence of an ability to directly observe or physically measure the issue of concern. If physical phenomena were available for observation or measurement, then a scientific test would not be needed.
Because deception and truth-telling are amorphous constructs, scientific lie detection and credibility assessment are, ultimately, epistemological concerns that are sometimes the subject of complex and important philosophical questions such as: what does it mean to say that something is true, and what kind of things can be said to be true? Although deeply interesting, these must be the subject of another publication.Read More
Lie Detector Test in Russia
A survey was conducted among Russian polygraph examiners 2003 through 2016. There were three stages of the survey with the first stage conducted 2003 through 2004, second stage in 2012 and third stage 2015 through 2016. Results of all stages of the survey were compiled and analyzed and found its reflection in the following publication.Read More
Polygraph Examinations With Awkward Clients, How Do You Deal With Them ?
How UK Polygraph Testers Handle Awkward Clients in Polygraph Examinations
This is a good question, what do you do when a person you’ve been asked to conduct a polygraph examinations with is annoying, deliberately offensive and it seems like he or she makes everybody uncomfortable. What examiner hasn’t ever experienced this? This is someone who continually displays anger or conceit, or maybe even superiority. If the subject is on probation of course, you can say something like the person is “non-cooperative” or just do things to fuel that haughtiness or threaten them with lock up, and nothing ever changes. Yeah, and I realize that there are also sources who would give advice just to deal with it, it’s the guys or gals problem, and not yours.
Lie Detector Tests UK Nationwide Locations – Liverpool Birmingham and Nottingham
However, if this person is, for example, someone who is a PCSOT individual who will be on probation for several years and will probably be in your examination chair about every four to six months, you might want to think of a possible avenue that will not only help you but might even be of great assistance to this subject.
One thought might be to understand the source of your own annoyance before you react. This kind of helps you figure out whether you’re being realistic in taking offense to this person’s demeanor. If you call the person out, you might even create more unnecessary tension. With that in mind, here’s a few thoughts that might work pretty well for your own follow up behavior.
First, “Ignore it.” An obnoxious individual may simply want attention. Is he or she just trying to get a rise out of you, or any others that he or she has contact with. If ignored, I’ve seen that behavior diminish on its own. Oh, maybe not right away, but about the third, or maybe even the second time I have contact with them. I have to tell you that change of attitude or behavior change always does amaze me when it occurs. I find that you have to be consistent in ignoring the behavior.
Of course, another alternative is to confront the offender but recognize that your confronting or corrective action might only anger him or her. One thing that I thought was interesting that individuals that I’ll call “prejudiced people” seem to be much more likely to change if they can first be made to feel good about themselves. Try asking good, self-affirming questions of a person whose behavior you’re trying to soften. Shining up someone’s self-esteem may help him or her feel less threatened. Similarly, if the offender won’t seem to soften up, another approach could consist of a little praise when the humor is more mature.
Polygraph Examiners: Not A Lie Detector, it’s a Truth Determinate
The experts on pre-test interviews and related observations and behaviors like the John Reid Associates and Stan Walters note in their work that the attitude displayed by the examiner during pre-test interviews should include being cordial and polite, interested and sincere. I agree, and I feel it should stay even-tempered and avoid challenging the examinee’s statements or alibis. An emphasis that I have found myself repeating that also seems to help is relating that the polygraph test is a “NOT A LIE DETECTOR” as much as it is a “TRUTH DETERMINATE” procedure.
The popular belief is of course is that it is a lie detector and the automatic attitude from the subject taking the test is that it is an instrument process to “Catch me doing something I’m not supposed to be doing” or “Catch me lying.” However, in bringing up that this is a “Truth Determinate” process, I’ve found that the belief of this event appears to subconsciously change a thinking that “This guy wants to prove I’m telling the truth. Everyone else things I’m guilty,” or that he did it, or whatever. I’m saying that this has worked for me.
Also, your own appearance and behavior has to match this attitude. This includes facial expressions of understanding and acceptance. Obviously, expressions of disgust, disbelief or anger work against this presentation. The behavioral attitudes of examinees obviously differ from composed and cooperative to nervous, angry and even fearful. We experience examinees who are overly anxious and even overly polite, guarded and complaining, plus an much even longer list. But I feel that our own behavioral attitude is an important game changer.