Throughout history investigation, departments and legal authorities have used certain techniques which aid in the process of condemning either a person guilty or innocent based on various methods to collect evidence either in the form of material or psychosocial responses of an individual and even in various cultures the practice for finding out the truth has been a great struggle. One of the strategies used to aid this investigation process is polygraphy examinations, also known as lie detector test which is based on physiological measurements when combined with interviews during interrogation.
The examination is based on checking physiological responses during the session of questioning either like asking yes or no responses while polygraphy equipment is attached with an individual and notes the responses in the form of vitals like respiratory rate, heart rate/pulse blood pressure, and skin reaction in the form of electrical conductance which is analyzed and stored on a polygraphy chart to catch criminals or to screen individuals for job interviews when it comes to national security firms.
At First Light Psychological Services, in Kew Gardens, NY & Farmingdale, NY our staff of dedicated professionals is providing wide-ranged polygraphy examination opportunities involving all the steps of physical tests for the undergoing interrogation process which helps you to better understand the truthfulness of a case under observation and assists you to create better judgment.
Analyzing Polygraphy Examination
The process works by analyzing deceptive behavior which alters normal physiological responses during the interview as it may hint towards lying as a defensive strategy for the criminal and this is noted in the electrical conductance created by voice tremors, sweating and disturbed vitals triggered by the underlying guilt and hence a chart is created which can be interpreted by a standard set by the authorities or by the specialist responsible for coding using the computer or other assistive devices.
Types of Questioning Techniques
There are 3 types of main questioning techniques used in polygraphy examination as a standard protocol:
1. The relevant-irrelevant technique
2. Control/comparison questioning test
3. Guilty knowledge polygraphy testing
At First Light Psychological Services, in Kew Gardens, NY & Farmingdale, NY our professionals are providing the facility of various testing techniques to rule suspects under investigation and to narrow down towards gaining clues, being the cause of ongoing criminal events, and to sort evidence for finding out the motive behind such acts.
The relevant-irrelevant technique:
It uses 2 types of questioning one is related to the main event and is specific other is unrelated to the event, individuals’ strong physiological stressor response towards related question is compared with the 2nd question and if there is noted a high affinity towards 1st it may be a sign of deception.
Control/comparison questioning test
In this type of questioning strategy, subtle questions are asked which are indirectly associated with an event and may tempt towards deception related to relevant questions, and responses are compared for subtle questions to relevant questions which may indicate a person is lying.
Guilty knowledge polygraphy testing
In this detailed information about the event which can only be known by the criminal are asked confidentially by the investigators in a multiple scenario situation and if the suspect denies all of them it means there is an element of hiding the truth leading him towards being a strong candidate involved in the particular incident.
Purpose of Polygraphy examinations
It is used on a global level by different police agencies secret services and even law firms when national security and secrecy of work goals are under question. Major countries in Europe Asia and other regions of the world are using these assistive techniques to gather better evidence and make their defense system stronger and more capable.
Following are some of the main purposes
1. It is sued for screening before grating employments in special firms like law and intelligence commissions to run a background check of psychosocial behavior of an individual under certain situations which can be lethal if went possibly in a wrong direction in future.
2. Also for currently employed individuals where a time to time check is necessary to maintain the confidentiality of the job tasks.
3. In police departments for interrogation purposes especially high profile cases where pieces of evidence are limited so to pinpoint the main causes, motives, and goals to narrow down the suspect’s list.
Importance of Polygraphy Evaluations
It is essential to understand that polygraphy evaluations are not yet enough alone and that it only aids in the interrogative process for each individual. The evaluation should be administered by a qualified professional since they are trained to obtain the most accurate results and analyze the performance.
To start the process of getting a polygraphy evaluation, reach out to our expert team of analytical professionals At First Light Psychological Services, in Kew Gardens, NY & Farmingdale, NY we are providing the services of polygraphy evaluations and all the related assessments to meet your concerns.