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Today we connected polygraph sensors to six girls studying at a theater school. Their task is to tell lies in certain situations. Your task is to ask questions and watch the telemetry of the sensors. And then decide whether the subject is lying or not.
You will see the girl herself in real time and all her indicators: breathing, heartbeat, skin conductivity, pressure and sweating. This is necessary so that you can decide for yourself and understand how creative, intuitive and imprecise the testing process is. Because it completely depends on the person conducting it. To make it easier for you to get used to it, here is a link to a polygraph examiner's manual, and in the post I will tell you the main things about the structure of this device and the basic techniques of the specialist. Let's start with the fact that your main sensor is the GSR, galvanic skin response. You can do without everything else, but it is the GSR that will give you the most information. The skin resistance measurement is registered very quickly, and the stress or hyperstress reaction to the GSR is visible even when asking the question. The other sensors are needed primarily to control that the subject is not trying to deceive the polygraph.
This is what a normal graph looks like:
You are primarily interested in hyperstress on the GSR sensor:
Here are more details:
You are interested in the reaction to the question, not the readings during the answer. Almost everything is decided at the moment when the subject begins to understand the meaning of the question, that is, somewhere in the middle of the phrase. If you see a hyperstress reaction, this is a sensitive question for the subject. If you see a stress reaction, you need to walk nearby. If substress, most likely, the answer will be truthful, but we also look at the GSR during the answer. The
task of the polygraph examiner is to bring a person to a state where he will be as emotionally tense as possible, but at the same time will not be afraid. That is, all preparation is aimed at ensuring that the amplitude of the GSR reactions is maximum.
The amplitude can be reduced by fatigue, an unbearable desire to go to the toilet, more after the previous question (in the manual this is carefully called "unexpected physical pain", and no, we will not do this), various psychotropic drugs, and so on. Each reason can be used to mislead the polygraph examiner. For example, the subject can bring a pushpin in his shoe and press it at the right moment to feel pain. In contrast to the expected reaction, you will see another movement on the sensor showing motor activity. If the subject tries to hold his breath, you will see it on the respiratory activity graph, etc. The subject may also squeeze his fingers, try to hide hand tremors, etc. - all this will be visible on the corresponding sensors. That is, if the readings of the GSR and other sensors do not agree, most likely, we are talking about an attempt to deceive the device and the polygraph examiner.
For example, the person may have planned to commit theft. The reaction does not mean that he is lying, does not mean that he planned, but it means that the issue worries him very much. Pay attention to the consistency of the sensor data:
Here it might be worth asking a few clarifying questions:
Here, pay attention to the discrepancy between the sensor readings. This is vibration or tremor:
The questions are distributed in the test in such a way that each one is asked several times in different wordings. The basic technique involves three types of questions: for calibration ("Is it Thursday today?", "Is your name Ivan?", "Do you believe in the existence of dogs?"), some to distract attention and remove the "consequences" of previous questions ("What is the name of the colleague at the next table?", "What did you have for breakfast?"), and some - significant - are included in the test. Significant questions are usually not presented in a row, since the subject's psyche cannot be exhausted too much, otherwise the GSR will change less. You can adapt to stress, and people do this successfully over time. Or they get tired. From time to time, test questions are repeated, the answer to which is known - this is a check of the calibration of the device and the absence of external stimuli that distort the results.
This is why you need to come to the test cheerful and well-rested. The less cheerful and well-rested you are, the more indifferent you will be to the questions. This is not beneficial for the polygraph examiner. During the preliminary interview (when there are no sensors yet), the polygraph examiner will check your condition - the speed of speech and the correct functioning of the speech centers, look at the pupils, and determine your general condition. But he cannot conduct medical tests, so the task is simply to determine the fitness of the mental state. People are rejected after taking tranquilizers (including daytime ones), in a state of hangover, sick, at certain stages of pregnancy, taking drugs, and so on. The next task of the polygraph examiner during the interview is to raise the stakes, that is, to explain to the subject the fee for failure. And then convince the subject that the results are interpreted unambiguously and reliably.
Naturally, you are being lied to. There can be no unambiguity in the interpretation of the results. But the more the subject is convinced of this, the easier it is for the polygraph examiner in the further test.
If a hyperactive, suspicious or angry person comes to the test interview, he needs to be brought to a normal state.
During the conversation, a range of questions is usually voiced. At this stage, it is still possible to relatively painlessly refuse some of the questions, but this will cause unhealthy interest in the person who ordered the study.
After this, you can connect the sensors.
The appearance of a polygraph
Polygraph with connected sensors
A typical set of interview questions includes:
Examples of significant questions:
Each question can evoke three reactions spaced in time: during the perception of the question, during the thinking process, and during the answer. It is possible that reactions from previous questions overlap with current ones, and artifacts are also possible - for example, the subject heard a question about false entries in reporting documents and imagined a situation in which he could do this. And he was afraid that he would be exposed on the detector, because he thought that he could do this. Your creative task is to try to understand what the person thought while thinking about the answer, and to explain the fluctuations in the graphs.
When conducting the SAT, you can avoid using biographical data by asking the subject to choose and remember a number from three to seven, and then tell it to the polygraph examiner. The polygraph examiner writes down the chosen number on a clean sheet of paper and, using a pin or adhesive tape, attaches the sheet to the wall in front of the subject. Then the polygraph examiner instructs the subject to look carefully at the number and answer "no" to all questions that will be asked about the chosen number. Following this, the polygraph examiner turns on the polygraph and asks the same question: "Have you chosen the number ...?", mentioning numbers from two to seven, naming in general order the one chosen by the subject. Upon completion of this test, the polygraph examiner informs the subject that the equipment is working normally, and the reaction to the question about the chosen number is pronounced, and it becomes clear what his physiological indicators look like when he is lying or telling the truth (to confirm these words, the polygraph examiner can show the subject a polygram). At the same time, the polygraph examiner emphasizes that the subject should not worry if he is sincere, since the study will confirm his rightness with high accuracy.
Not really. Everything is based on the charisma of the polygraph examiner. Actually, you will be able to see this for yourself when you talk to the subjects.
Nevertheless, in Russia, conclusions are written in binary terms: thief or not, corrupt or not, alcoholic or healthy. Because money is paid for the research, and the result “does not steal with a probability of 90%” does not satisfy anyone. The result of the test is the decision to hire the employee, and it is believed that if the polygraph examiner made a mistake and rejected an innocent person, it is not as bad as hiring a “vicious” employee.
There is a study on tests in the US government system. Main findings:
That is, the test has no practical meaning for the decision to hire. However, it has practical meaning in those moments when you need to find out the details of a crime or understand the reasons for something suspicious.
On the other hand, polygraph examiners are trained in the following way: a test crime is committed (one of the group steals an object in a controlled environment), and the polygraph examiner's task is to find out who it was. That is, the event is quite real, but the reaction is weaker due to the understanding of their own safety. Usually, a polygraph examiner conducts about 10-15 such tests during training, and then learns on real people. It is written right in the manual that you need to convince the subject that the polygraph examiner is experienced, so no matter how "green" the intern comes to you, according to the introductory information, you will have a luminary of telepathy in front of you. No options.
The data from the polygraph can be used either as a testimony or as some ephemeral argument in the interests of the subject in court. But at the same time, in Russia and many other countries, it is not evidence.
The next barrier to credibility is the subject's conviction that he is right. A polygraph is not a lie detector, but a means of measuring stress levels with high resolution. If the subject is calm about the answer, you can easily get the result "true". Let's say you have a manager who takes kickbacks. If you formulate the question in the spirit of "have you done anything bad?", he can be sure that he has not. Because all his colleagues and everyone around him took kickbacks. And for him, this is normal. Nothing bad. Or if the person is so narrow-minded that he is sincerely convinced of something, even though it contradicts logic. Usually, the polygraph examiner looks for logical inconsistencies in questions and reactions and points them out to the subject, offering to explain such a story. Therefore, it is more difficult to test stupid people than smart ones.
The polygraph examiner's prejudice is important: as a rule, this is a person with a psychological education, and many interesting things are revealed even during the preliminary interview without sensors. The test strategy then depends on whether the polygraph examiner is convinced that they are trying to deceive him in specific questions. This depends on the charisma of the subject: pleasant people who can win people over are the most dangerous in this regard. Therefore, the polygraph examiner will check the adjustment by movements towards themselves: if it is achieved too quickly, this is a signal of such a situation.
Naturally, subjects usually hesitate on questions about their own honesty and - most often - about drugs. "Have you used" - almost everyone has used, it is necessary to formulate it more precisely. Therefore, the question is usually about something heavier than marijuana and in the horizon of several years.
In Russian schools, it is forbidden to ask questions that can humiliate the human dignity of the subject. In professional ethics, this means questions about sexual orientation, sex life, religion, politics, a number of questions about health, and so on. At the same time, there are borderline questions. "Why are you still not married" may be normal for a 20-year-old guy, but not so much for a 35-year-old woman. In our test, you can ask any questions, but, as in a real test, subjects may not answer them.
Another problem with assessing the accuracy is the incorrect interpretation of the result. For some reason, the subject is worried. Why? It is unlikely that he will answer this.
In last place is the preparation of counteraction: most techniques are "bought off" by the difference in sensor readings, but preparation according to the same Stanislavsky system is possible, which implies deep immersion in the image. In our case with the theater students, the polygraph examiner recommends immediately raising the stakes and knocking them out of character, pointing out that right now this video camera is broadcasting to approximately ten thousand people, and each of them is examining their faces pixel by pixel.
If you do this right during the test, sitting with the sensors, it is a huge find for the polygraph examiner and a problem for the subject. For example, if you refuse to answer the question "Have you slept with colleagues", then there will be a series of questions asking you to explain the reasons for your refusal. Most likely, it will end with either an additional test on this topic being assigned (the conversation will turn in this direction in half an hour or an hour), or there will be another test on colleagues with a question about the subject and sexual relations with him.
Heart rate is not measured. Usually, a standard set of sensors includes respiratory activity (but it is also visible to the eyes), GSR (the main indicator), a motion sensor, electrical activity of the brain (without detail), a photoplethysmogram or piezoplethysmogram (vascular reaction, blood flow). Previously, a blood pressure sensor was installed instead of a photoplethysmogram, but they are interchangeable. The PPG is placed on the ring or middle finger and does not create such discomfort as a cuff.
An example of an artifact on the question about a stolen cat:
The process of installing the sensors should be impressive and look like a performance. The device should also impress. It’s a pity that nothing smokes or sparkles in it, but the set of sensors convinces of the seriousness of what is happening. The same sensor of electrical activity of the brain makes the greatest impression on non-geeks. In practice, it is needed in quite rare cases.
A PPG/Photoplethysmogram sensor (measuring tissue density) is attached to the middle finger. The GSR/Sweating sensor is on the index and ring fingers.
We are talking about seconds or fractions of a second.
No. It indicates a stress reaction. A person imagined something, remembered something, heard a tram on the street, thought about something unnecessary, focused on the sensation in a finger, or did something else. Most often, it is about the fact that he imagined something, and the polygraph examiner's intuition is needed to understand how to interpret the result and what to do next according to the test strategy. It is most difficult with anxious and suspicious people, they will react excessively to everything, impose each situation on themselves and be afraid of their own train of thought. It is most difficult with those who do not consider the cost of failure significant and react to everything calmly. A
strong distraction, such as the desire to go to the toilet, will be a problem: there will be an excessive stress reaction, but with a clear source. After five to ten questions, it will end with you going to the toilet with the polygraph examiner.
People most often lie or omit information about illegal or questionable events that have occurred in the past few years. Even if they understand that a polygraph examiner will uncover their lies, confessing to the same document forgery ("Have you ever signed documents for your manager?") to a stranger is not a very smart idea. Example: an insurance company, one of the department heads manages contracts with corporate clients. The founder accused him of collusion with a specific client. His job involves negotiations, and no one knows how he conducts them. Maybe he plays golf. Maybe he orders prostitutes. Maybe he beats a client with a phone book. It doesn't matter. What matters is whether he gets a kickback. The man was tense on all these questions: he gave hyperstress, but in the format of artifacts. That is, not right away. As it turned out later, he was finishing up a previous work process in another company. There was an interaction with a storekeeper, they were stealing something.
As a result, the conclusion included "does not take kickbacks from this client." A smart polygraph examiner will not include the finding about the storekeeper in the report - it is not related to the current question, but can harm the subject. But not all are smart. And it is impossible to say that all such irrelevant questions will not be included in the conclusion, because then the person will focus on them and will be sure that they will be included absolutely definitely.
Therefore, another acceptable strategy is - even if you know that you will be caught in a lie, do not confess and do not go into details.
After each answer of the girl, you have 20 seconds to determine whether she is telling the truth or lying. If you are right, you get a plus point, if not or did not have time to answer, 0 points. If you have made your verdict, the system will give you an answer whether she told the truth or a lie.
No, only those questions that you "had time for" are included in the general scoring. You can join at any time. There will be a 15-minute commercial break during the shift change of the interrogated girls - if you have entered the game but see the "commercial break" sign, do not go far - in a couple of minutes a new subject will sit down on the chair and you will be able to start the game.
The game will last from 14:15 to 22:00.
We have created a special Ubuntu image in our marketplace where you can ask a question. Here is the instruction on how to do it:
The most important thing is that the question is formulated in such a way that it can be answered with a clear "yes" or "no". Also, what you send should not contain more than one question.
We will not skip questions that can cause problems for the girl in her personal or work life, such as questions about cheating or illegal substances. Overly frank questions that touch on physiological and sexual details will also not pass moderation - we are concerned about the girls and will protect their honor, dignity and psychological comfort.
But this does not prevent you from asking them questions about relationships or feelings.
Source
You will see the girl herself in real time and all her indicators: breathing, heartbeat, skin conductivity, pressure and sweating. This is necessary so that you can decide for yourself and understand how creative, intuitive and imprecise the testing process is. Because it completely depends on the person conducting it. To make it easier for you to get used to it, here is a link to a polygraph examiner's manual, and in the post I will tell you the main things about the structure of this device and the basic techniques of the specialist. Let's start with the fact that your main sensor is the GSR, galvanic skin response. You can do without everything else, but it is the GSR that will give you the most information. The skin resistance measurement is registered very quickly, and the stress or hyperstress reaction to the GSR is visible even when asking the question. The other sensors are needed primarily to control that the subject is not trying to deceive the polygraph.
What to look at?
This is what a normal graph looks like:
You are primarily interested in hyperstress on the GSR sensor:
Here are more details:
You are interested in the reaction to the question, not the readings during the answer. Almost everything is decided at the moment when the subject begins to understand the meaning of the question, that is, somewhere in the middle of the phrase. If you see a hyperstress reaction, this is a sensitive question for the subject. If you see a stress reaction, you need to walk nearby. If substress, most likely, the answer will be truthful, but we also look at the GSR during the answer. The
task of the polygraph examiner is to bring a person to a state where he will be as emotionally tense as possible, but at the same time will not be afraid. That is, all preparation is aimed at ensuring that the amplitude of the GSR reactions is maximum.
The amplitude can be reduced by fatigue, an unbearable desire to go to the toilet, more after the previous question (in the manual this is carefully called "unexpected physical pain", and no, we will not do this), various psychotropic drugs, and so on. Each reason can be used to mislead the polygraph examiner. For example, the subject can bring a pushpin in his shoe and press it at the right moment to feel pain. In contrast to the expected reaction, you will see another movement on the sensor showing motor activity. If the subject tries to hold his breath, you will see it on the respiratory activity graph, etc. The subject may also squeeze his fingers, try to hide hand tremors, etc. - all this will be visible on the corresponding sensors. That is, if the readings of the GSR and other sensors do not agree, most likely, we are talking about an attempt to deceive the device and the polygraph examiner.
For example, the person may have planned to commit theft. The reaction does not mean that he is lying, does not mean that he planned, but it means that the issue worries him very much. Pay attention to the consistency of the sensor data:
Here it might be worth asking a few clarifying questions:
Here, pay attention to the discrepancy between the sensor readings. This is vibration or tremor:
The questions are distributed in the test in such a way that each one is asked several times in different wordings. The basic technique involves three types of questions: for calibration ("Is it Thursday today?", "Is your name Ivan?", "Do you believe in the existence of dogs?"), some to distract attention and remove the "consequences" of previous questions ("What is the name of the colleague at the next table?", "What did you have for breakfast?"), and some - significant - are included in the test. Significant questions are usually not presented in a row, since the subject's psyche cannot be exhausted too much, otherwise the GSR will change less. You can adapt to stress, and people do this successfully over time. Or they get tired. From time to time, test questions are repeated, the answer to which is known - this is a check of the calibration of the device and the absence of external stimuli that distort the results.
This is why you need to come to the test cheerful and well-rested. The less cheerful and well-rested you are, the more indifferent you will be to the questions. This is not beneficial for the polygraph examiner. During the preliminary interview (when there are no sensors yet), the polygraph examiner will check your condition - the speed of speech and the correct functioning of the speech centers, look at the pupils, and determine your general condition. But he cannot conduct medical tests, so the task is simply to determine the fitness of the mental state. People are rejected after taking tranquilizers (including daytime ones), in a state of hangover, sick, at certain stages of pregnancy, taking drugs, and so on. The next task of the polygraph examiner during the interview is to raise the stakes, that is, to explain to the subject the fee for failure. And then convince the subject that the results are interpreted unambiguously and reliably.
Naturally, you are being lied to. There can be no unambiguity in the interpretation of the results. But the more the subject is convinced of this, the easier it is for the polygraph examiner in the further test.
If a hyperactive, suspicious or angry person comes to the test interview, he needs to be brought to a normal state.
During the conversation, a range of questions is usually voiced. At this stage, it is still possible to relatively painlessly refuse some of the questions, but this will cause unhealthy interest in the person who ordered the study.
After this, you can connect the sensors.
The appearance of a polygraph
Polygraph with connected sensors
What kind of questions?
A typical set of interview questions includes:
- Search for debts and outstanding loans (“Do you owe someone a large amount of money?”).
- Assessment of the level of conflict (“Did you have conflicts with any of your co-workers at your previous job?”).
- Assessment of the propensity to corruption ("Have you received additional compensation for transactions in the last three years?"). Three years is not a coincidence here, because in questions of this level, as well as "have you ever stolen", we are not particularly interested in small change stolen in six years, but theft from a warehouse last year would be more interesting.
- Testing for addictions - gambling, drugs, alcohol.
- Checking the reason for leaving the previous job.
- Checking the reason for hiring for this job (otherwise, it might be a spy).
- Verification of resumes and authenticity of documents.
- Assessment of health status (whether something will interfere with work, for example, an emerging pregnancy).
- Questions about "leftists" who can distract from work.
Examples of significant questions:
- Do you live in Russia?
- Did you make false entries in reporting documents at your previous job?
- Have you had any serious conflicts with your management over the past year?
- Do you often deceive your colleagues at work?
- Have you ever had to cover for one of your colleagues, knowing in advance of their guilt?
- Have you ever acted dishonestly at work?
- Do you have any serious illnesses that may interfere with your work?
Each question can evoke three reactions spaced in time: during the perception of the question, during the thinking process, and during the answer. It is possible that reactions from previous questions overlap with current ones, and artifacts are also possible - for example, the subject heard a question about false entries in reporting documents and imagined a situation in which he could do this. And he was afraid that he would be exposed on the detector, because he thought that he could do this. Your creative task is to try to understand what the person thought while thinking about the answer, and to explain the fluctuations in the graphs.
When conducting the SAT, you can avoid using biographical data by asking the subject to choose and remember a number from three to seven, and then tell it to the polygraph examiner. The polygraph examiner writes down the chosen number on a clean sheet of paper and, using a pin or adhesive tape, attaches the sheet to the wall in front of the subject. Then the polygraph examiner instructs the subject to look carefully at the number and answer "no" to all questions that will be asked about the chosen number. Following this, the polygraph examiner turns on the polygraph and asks the same question: "Have you chosen the number ...?", mentioning numbers from two to seven, naming in general order the one chosen by the subject. Upon completion of this test, the polygraph examiner informs the subject that the equipment is working normally, and the reaction to the question about the chosen number is pronounced, and it becomes clear what his physiological indicators look like when he is lying or telling the truth (to confirm these words, the polygraph examiner can show the subject a polygram). At the same time, the polygraph examiner emphasizes that the subject should not worry if he is sincere, since the study will confirm his rightness with high accuracy.
And how reliable is this shamanism?
Not really. Everything is based on the charisma of the polygraph examiner. Actually, you will be able to see this for yourself when you talk to the subjects.
Nevertheless, in Russia, conclusions are written in binary terms: thief or not, corrupt or not, alcoholic or healthy. Because money is paid for the research, and the result “does not steal with a probability of 90%” does not satisfy anyone. The result of the test is the decision to hire the employee, and it is believed that if the polygraph examiner made a mistake and rejected an innocent person, it is not as bad as hiring a “vicious” employee.
There is a study on tests in the US government system. Main findings:
That is, the test has no practical meaning for the decision to hire. However, it has practical meaning in those moments when you need to find out the details of a crime or understand the reasons for something suspicious.
On the other hand, polygraph examiners are trained in the following way: a test crime is committed (one of the group steals an object in a controlled environment), and the polygraph examiner's task is to find out who it was. That is, the event is quite real, but the reaction is weaker due to the understanding of their own safety. Usually, a polygraph examiner conducts about 10-15 such tests during training, and then learns on real people. It is written right in the manual that you need to convince the subject that the polygraph examiner is experienced, so no matter how "green" the intern comes to you, according to the introductory information, you will have a luminary of telepathy in front of you. No options.
The data from the polygraph can be used either as a testimony or as some ephemeral argument in the interests of the subject in court. But at the same time, in Russia and many other countries, it is not evidence.
The next barrier to credibility is the subject's conviction that he is right. A polygraph is not a lie detector, but a means of measuring stress levels with high resolution. If the subject is calm about the answer, you can easily get the result "true". Let's say you have a manager who takes kickbacks. If you formulate the question in the spirit of "have you done anything bad?", he can be sure that he has not. Because all his colleagues and everyone around him took kickbacks. And for him, this is normal. Nothing bad. Or if the person is so narrow-minded that he is sincerely convinced of something, even though it contradicts logic. Usually, the polygraph examiner looks for logical inconsistencies in questions and reactions and points them out to the subject, offering to explain such a story. Therefore, it is more difficult to test stupid people than smart ones.
The polygraph examiner's prejudice is important: as a rule, this is a person with a psychological education, and many interesting things are revealed even during the preliminary interview without sensors. The test strategy then depends on whether the polygraph examiner is convinced that they are trying to deceive him in specific questions. This depends on the charisma of the subject: pleasant people who can win people over are the most dangerous in this regard. Therefore, the polygraph examiner will check the adjustment by movements towards themselves: if it is achieved too quickly, this is a signal of such a situation.
Naturally, subjects usually hesitate on questions about their own honesty and - most often - about drugs. "Have you used" - almost everyone has used, it is necessary to formulate it more precisely. Therefore, the question is usually about something heavier than marijuana and in the horizon of several years.
In Russian schools, it is forbidden to ask questions that can humiliate the human dignity of the subject. In professional ethics, this means questions about sexual orientation, sex life, religion, politics, a number of questions about health, and so on. At the same time, there are borderline questions. "Why are you still not married" may be normal for a 20-year-old guy, but not so much for a 35-year-old woman. In our test, you can ask any questions, but, as in a real test, subjects may not answer them.
Another problem with assessing the accuracy is the incorrect interpretation of the result. For some reason, the subject is worried. Why? It is unlikely that he will answer this.
In last place is the preparation of counteraction: most techniques are "bought off" by the difference in sensor readings, but preparation according to the same Stanislavsky system is possible, which implies deep immersion in the image. In our case with the theater students, the polygraph examiner recommends immediately raising the stakes and knocking them out of character, pointing out that right now this video camera is broadcasting to approximately ten thousand people, and each of them is examining their faces pixel by pixel.
What happens if I refuse to answer?
If you do this right during the test, sitting with the sensors, it is a huge find for the polygraph examiner and a problem for the subject. For example, if you refuse to answer the question "Have you slept with colleagues", then there will be a series of questions asking you to explain the reasons for your refusal. Most likely, it will end with either an additional test on this topic being assigned (the conversation will turn in this direction in half an hour or an hour), or there will be another test on colleagues with a question about the subject and sexual relations with him.
Is there a pulse sensor?
Heart rate is not measured. Usually, a standard set of sensors includes respiratory activity (but it is also visible to the eyes), GSR (the main indicator), a motion sensor, electrical activity of the brain (without detail), a photoplethysmogram or piezoplethysmogram (vascular reaction, blood flow). Previously, a blood pressure sensor was installed instead of a photoplethysmogram, but they are interchangeable. The PPG is placed on the ring or middle finger and does not create such discomfort as a cuff.
An example of an artifact on the question about a stolen cat:
The process of installing the sensors should be impressive and look like a performance. The device should also impress. It’s a pity that nothing smokes or sparkles in it, but the set of sensors convinces of the seriousness of what is happening. The same sensor of electrical activity of the brain makes the greatest impression on non-geeks. In practice, it is needed in quite rare cases.
A PPG/Photoplethysmogram sensor (measuring tissue density) is attached to the middle finger. The GSR/Sweating sensor is on the index and ring fingers.
How quickly can stress be seen on the GSR?
We are talking about seconds or fractions of a second.
Is stress response a sign of lying?
No. It indicates a stress reaction. A person imagined something, remembered something, heard a tram on the street, thought about something unnecessary, focused on the sensation in a finger, or did something else. Most often, it is about the fact that he imagined something, and the polygraph examiner's intuition is needed to understand how to interpret the result and what to do next according to the test strategy. It is most difficult with anxious and suspicious people, they will react excessively to everything, impose each situation on themselves and be afraid of their own train of thought. It is most difficult with those who do not consider the cost of failure significant and react to everything calmly. A
strong distraction, such as the desire to go to the toilet, will be a problem: there will be an excessive stress reaction, but with a clear source. After five to ten questions, it will end with you going to the toilet with the polygraph examiner.
Can you give an example of such a question?
People most often lie or omit information about illegal or questionable events that have occurred in the past few years. Even if they understand that a polygraph examiner will uncover their lies, confessing to the same document forgery ("Have you ever signed documents for your manager?") to a stranger is not a very smart idea. Example: an insurance company, one of the department heads manages contracts with corporate clients. The founder accused him of collusion with a specific client. His job involves negotiations, and no one knows how he conducts them. Maybe he plays golf. Maybe he orders prostitutes. Maybe he beats a client with a phone book. It doesn't matter. What matters is whether he gets a kickback. The man was tense on all these questions: he gave hyperstress, but in the format of artifacts. That is, not right away. As it turned out later, he was finishing up a previous work process in another company. There was an interaction with a storekeeper, they were stealing something.
As a result, the conclusion included "does not take kickbacks from this client." A smart polygraph examiner will not include the finding about the storekeeper in the report - it is not related to the current question, but can harm the subject. But not all are smart. And it is impossible to say that all such irrelevant questions will not be included in the conclusion, because then the person will focus on them and will be sure that they will be included absolutely definitely.
Therefore, another acceptable strategy is - even if you know that you will be caught in a lie, do not confess and do not go into details.
Brief FAQ about the game:
How to earn points
After each answer of the girl, you have 20 seconds to determine whether she is telling the truth or lying. If you are right, you get a plus point, if not or did not have time to answer, 0 points. If you have made your verdict, the system will give you an answer whether she told the truth or a lie.
Will I get less points if I join in the middle?
No, only those questions that you "had time for" are included in the general scoring. You can join at any time. There will be a 15-minute commercial break during the shift change of the interrogated girls - if you have entered the game but see the "commercial break" sign, do not go far - in a couple of minutes a new subject will sit down on the chair and you will be able to start the game.
The game will last from 14:15 to 22:00.
How to ask your question
We have created a special Ubuntu image in our marketplace where you can ask a question. Here is the instruction on how to do it:
- Register with us on the website ruvds.com.
- Select the LieDetector image from the marketplace.
- Order a server for a trial period - it's free. To avoid paying for the server, switch the blue toggle "Use trial period".
- Wait for the server to be created - this will take about 5-7 minutes.
- Connect to your new server via SSH.
- Enter the command ask-online in the command line.
- If your question has passed moderation, you will receive the answer "accepted".
What questions can be asked?
The most important thing is that the question is formulated in such a way that it can be answered with a clear "yes" or "no". Also, what you send should not contain more than one question.
We will not skip questions that can cause problems for the girl in her personal or work life, such as questions about cheating or illegal substances. Overly frank questions that touch on physiological and sexual details will also not pass moderation - we are concerned about the girls and will protect their honor, dignity and psychological comfort.
But this does not prevent you from asking them questions about relationships or feelings.
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