The psychological testing room is undoubtedly the warmest functional room of the Criminal Technology Center, and there is no slogan on the wall of the interrogation room, such as "leniency in confession, strict in resistance", no rules and regulations, no public security badges, and no blue and white public security logos. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

One wall is one-way tempered transparent glass, and the other three walls are soundproofed, including the door, the floor is a soft carpet, the whole room is beige, and there is a pot of green plants in the corner, which is very quiet and warm, and even the lights are so soft.

Not only does polygraphing require a quiet environment, but the room temperature must also be kept between 22 and 25 degrees Celsius. Only in this way will the person being tested feel comfortable and the data presented by the various indicators of the body will be the most realistic.

"Comrade Zhang Xingbao, don't be nervous, let's play a game first. ”

The technical police officers invited from the Jiangcheng City Bureau were very satisfied with the environment of the psychological test of the Nangang City Bureau, and even a little envious, so they took out a deck of playing cards as if by magic, and planned to play for a while while to see the posture.

Zhang Xingbao looked up at the camera in the upper left corner, looked at the one-way transparent glass on the right, recalled everything that had happened from morning to now, and no matter how stupid he was, he understood that what he had been worrying about almost every day for eleven years had finally happened.

He was transferred to the city bureau to participate in the anti-drug special operation, and in the morning, he was asked to send the inspection materials here, and after completing the inspection procedures, he was dragged to test the equipment that the criminal technology center had just purchased, all of which were arranged by the people who investigated the Xunli case.

I didn't expect that they would be investigated in the past so many years, and I didn't expect that they would doubt themselves as much as the case-handling personnel back then.

Eleven years, there are several eleven years in life!

There has to be an end to this matter, whether it is a blessing or a curse, it is a blessing or a curse, and it is a disaster that cannot be avoided, so that you can worry about it all day long.

Zhang Xingbao didn't want to waste time, so he stared at the young polygraph expert and asked, "Comrade, what is your surname?"

"Your surname is Xu, this is my colleague Xiao Tong. ”

"How many times have you tested it before?"

The subject of this test is not an ordinary suspect, but a police officer who has worked in the public security system for more than 10 years, and yesterday he was still sitting in a drug rehabilitation center to interrogate drug addicts, which is not easy to deal with.

Xu Hua had already prepared, shuffled the cards in his hand, looked at him with a smile and said, "More than a hundred times, the accuracy rate is 100 percent." ”

"I'm sorry, I'm not worried that you're measuring too accurately, I'm worried that you won't be able to measure it accurately. This is the Xunli case from eleven years ago, I cooperated, in fact, I have always hoped to accept a polygraph. How to play, I will only have a few simple ones, such as scramble and eighty points. ”

Zhang Xingbao was frank, but the people in the conference room felt a little surprised, not that he didn't look like a suspect who committed a crime, but how could a very serious polygraph turn into playing cards, too child's play.

Han Bo glanced at his partner, walked over to her, took the mouse, and took over the projector connected to her laptop.

Professional questions are presented by professionals.

Zhou Suying is both a political commissar and a professional, and has successively served as the director and vice president of the medical administration department of Ankang Hospital, a member of the Nangang Judicial Psychiatric Appraisal Expert Group, and a director of the Nangang Mental Health Association. He has been engaged in psychiatric clinical work for more than ten years, with superb medical skills and in-depth research on various mental disorders.

The principle of psychological testing is derived from medicine and psychology, which is no different from her major.

Since he was transferred to the political commissar of the technical investigation detachment, he has been studying psychological tests, and his theoretical level is much higher than that of the two technical policemen downstairs, but he has never practiced it.

She smiled slightly and explained in fluent Mandarin: "Leaders, the polygraph test is not a test of whether the person being tested is lying, but a test of whether he has a special memory of the facts of the crime or a specific event. When a person is subjected to a certain psychological stimulus, there will be obvious changes in physiological indicators.

For example, increased heart rate, shortness of breath, increased blood pressure, changes in skin resistance, muscle tremors, etc., these subtle reactions can be sensed by the psychological tester, so as to show changes in parameters such as pulse waves and breathing waves on the instrument.

Because the person has committed some illegal and criminal acts, the image perceived, the emotions experienced, and the behaviors taken at that time will leave an extremely deep impression on the brain. Once asked about matters related to the case and the circumstances of the crime, his psychological and physiological reactions will inevitably be captured by a psychological tester, thus ultimately revealing the mental traces of the person being tested. In layman's terms, it was the body that betrayed him. ”

"Xiao Zhou, I know a little bit about the principle, what I want to know is when will the test start?"

"Judging from the surveillance video, Zhang Xingbao's mental state is relatively stable, and he should be able to start in half an hour at most. In order to ensure the accuracy of the test results, the psychological and physiological aspects of the person being tested should be relaxed as much as possible, and the two technical policemen played a few small games with him, just to make him as relaxed as possible. ”

Han Bo has experienced big scenes and has rich reporting experience.

I had long considered that there might be a "cold field" before the psychological test and formal interrogation, and I didn't mean to report a situation when I reported just now, and with a click of the mouse, a beautiful girl appeared on the projection screen.

Zhou Suying comprehended, pointed to the screen and said: "Leaders, this girl's name is Liang Liyun, this is a photo from eleven years ago, and she was also a staff member of the Seamen's Club back then." The victim's blood stains were detected in the scrapped No. 8 car, and when determining the direction of investigation of manslaughter, we first suspected that the murderer's real target was not Zhang Xiaoyuan, but this Liang Liyun.

The reason why there is this suspicion is because she had been in love with Zhang Xingbao back then, Zhang Xingbao was so suspicious back then, and now he has been tested for blood stains in the car he drove, we directly believe that he is not hated because of love, and on the night of the wedding banquet, Deputy Secretary Bi was sent home first, and then returned to the vicinity of the Seamen's Club to commit the crime.

As a result, the investigation found that the two had a very good relationship at the time, and the breakup was a year after the incident, and the breakup was proposed by Zhang Xingbao first. According to Liang Liyun's recollection, the reason for the breakup he proposed at that time was really untenable, saying that he was transferred to the Public Security Bureau, the salary was low, the treatment was not good, and he had no future, so he didn't want to delay her. ”

"It's untenable. ”

An old cadre lit a cigarette and muttered: "He drove Secretary Bi, and he couldn't go to any unit he wanted, and he couldn't have a future if others had no future." ”

Liang Liyun thought he had changed his mind, and after the breakup, he married a British seafarer, and although his household registration has not been cancelled, he is now a British citizen. There is too much difference between the Eastern and Western cultures, and the decision to marry at that time may have something to do with the breakup, and I was not very happy, I divorced my husband five years ago, and opened a small restaurant in the UK alone. ”

Women like to listen to gossip, and leaders like to listen to it too.

The problem of the cold field was solved, and Zhou Suying continued: "She is not happy, Zhang Xingbao is also unhappy, and she is still single and has never been married. His family and colleagues from the leaders of the sub-bureau helped him introduce him, but he refused under various excuses. So much so that many people thought that he had been injured on the battlefield, that he had physical problems, that he could not have children, and that he did not dare to get married.

Judging from the current situation, he is not changing his mind and his health is fine, but he is worried that the police investigating the 12.26 case will find him one day, and he cannot prove his innocence, and he is worried that it will affect his family, wife and children. ”

If this case really has nothing to do with him, then the police officer who is about to be tested on the screen is really a man.

It's a pity that he has concealed important information after all, and it is not enough to pursue legal responsibility, but this police uniform is obviously not suitable for him to wear anymore. Chen Ju sighed secretly and focused his attention on the LCD screen.

As Zhou Suying said, the technical police felt that Zhang Xingbao's current mental condition could be tested, and on his body, wrists, and fingers were connected with sensors similar to electrocardiograms, and he looked sideways at the laptop screen to confirm that the equipment was normal, and began to ask questions.

"Have you ever been to the East China Sea?"

"Been there. ”

"What do you do?"

"Police, public security police. ”

When people tell the truth, their brains only need to listen and speak, and there will not be a lot of time for active thinking, and the fluctuations in the data monitored by the instrument will not be obvious. But if you lie, all the brain has to do is listen, think, and speak, and although it is short, it can be accurately captured by a lie detector.

These are well-designed "yardstick" questions, and the tester will generally answer yes or no questions with gusto. The physical indicators used to answer these questions will be used as general indicator values for the person being tested.

Then ask questions related to the case, if the testee's heartbeat, breathing, blood pressure and other values change drastically when answering, and the index is higher than the index of the "standard" question, it may be lying.

After asking a few painless questions, he responded calmly without thinking.

The polygraph policeman asked coldly: "You haven't lied on some major issues?"

"No...... Yes!"

"Yes or no?"

"Yes. ”

"Why did you kill Xunli?"

"No, I didn't kill Xunli!" Zhang Xingbao said categorically, his voice much higher than when he answered the previous questions.

The polygraph police officer looked at the laptop and asked, "What's your name?"

"Zhang Xingbao. ”

Yesterday, two young polygraph experts devised five sets of 10 questions. For the next 45 minutes, I repeatedly asked questions unrelated to the case, such as "what is your name" and "what do you do". Interspersed with questions such as "Why did you kill Xunli" and "Who killed Xunli".

The atlas shows that when he answers the relevant questions, his heartbeat does not increase significantly, his blood pressure does not increase significantly, and the fluctuations in his physiological characteristics are not very drastic, which shows that he is not weak.

No one wants their peers to be murderers!

After asking the last question, the technical police showed a knowing smile, got up and shook his head at the camera, and immediately took off the sensor and began to pack up the equipment.

The results of a polygraph cannot be used as evidence, but they can be used as an important reference for whether the suspect is related to the case.

The speculation is correct, Han Bo also breathed a sigh of relief, pointed to the screen and introduced: "Leaders, now it is Comrade Tian Guogang and Comrade Wu Changcheng who are the policemen of the special case team who are handling the case, and the old director may have the impression that they participated in the investigation of the 12.26 case back then, and they will be responsible for the inquiry next." ”

The old comrade asked the old policeman that this arrangement was the best, and Chen Ju nodded with satisfaction.

In the psychological testing room, Tian Guogang and the others sat in front of Zhang Xingbao, one asked questions, and the other took notes.

Zhang Xingbao is not very familiar with Lao Tian, and he is so familiar with Lao Wu that he can't be more familiar, and he was suddenly a little surprised to see him, subconsciously touched his pocket, took out a cigarette and sent it to his mouth, and found that there was no ashtray on the table, and the room environment was so good, he could only put down the cigarette.

"You can smoke if you want. ”

After misunderstanding people for so many years, Lao Wu was a little apologetic, put down the pen and paper and went out to find an ashtray.

The leader was watching in the conference room, Tian Guogang didn't dare to waste time, and said bluntly: "Comrade Zhang Xingbao, I am Tian Guogang, a police officer of the 12.26 case task force, Comrade Wu Changcheng, you know him, so I don't need to introduce you." We will inquire about you in accordance with the instructions of the superior and the case-handling procedures in accordance with the law, and ask you to answer every question truthfully. ”

"Yes. ”

"On the evening of December 26, 1990, where did you go after you sent the deputy secretary of the municipal party committee back, and what did you do?"

"Go to the seafarers' club and pick up my girlfriend from work. ”

"What's my girlfriend's name?"

"Liang Liyun. ”

"Did you get it?"

"Nope. ”

"Why didn't I get it? ”

This incident is so impressive that I think about it almost every day for the past eleven years, so much so that for a while I really thought I did it.

Recalling the bloody scene that night, Zhang Xingbao took a puff of cigarette and said solemnly: "When I drove to the vicinity of Huafeng Machinery Factory on Changgang South Road, I found a person lying on the ground, struggling in pain, and the ground was full of blood. I have been a soldier, fought in a war, drilled in a cat's ear hole for more than half a year, and worked in the municipal party committee, how can I not save myself when I die.

I didn't think much about it at the time, I quickly stopped to save people, the blood flowed, my first reaction was to stop the bleeding, there was no first aid kit at hand, I could only use her scarf to tie it, and only after tying it did I recognize her as Secretary Li's lover. At that time, there was no mobile phone, and there was no one around, so I shouted several times that there was no one, so I could only carry her to the car, planning to take her to the hospital quickly.

When I put her flat in the back seat and was about to close the car door, her head suddenly drooped down, I have seen a dead person, a comrade-in-arms on the Laoshan front line fell into my arms, stretched out his hand to probe her nose, she was not breathing!

Comrade Tian Guogang, Lao Wu, please believe me, I didn't kill her, I really didn't kill her, I have no grievances with Xun Li, and I have no contradiction with Secretary Li, why should I kill her? I really wanted to save people at that time, I was a veteran, a party member, and a driver of the municipal party committee's car, and I had the obligation and responsibility to save her......

"And then?"

She lost her breath, and I suddenly thought of the question, who was so ruthless, who did it. The person was not saved, and the shadow of the murderer was not seen, but my hands, body, and car were full of blood.

The boy doesn't flick when he has tears, but he hasn't reached the sad place.

Zhang Xingbao burst into tears and wiped a handful of tears: "Only those who have been on the battlefield and experienced the war know how precious life is, and I am not afraid of the jokes of the two of you, my legs were weak when I came down from the front line." It's not just me, it's all of us, if we don't choose to leave the army, if we stay in the army, we who pick up a life and do it all-round, but we don't leave any of us, we just want to go home for a few days and have a peaceful birthday.

I'm afraid of death, and I'm even more afraid of unjust death!

Dying on the battlefield, I, Zhang Xingbao, am a hero and a martyr. Although my parents are sad, they are glorious, and the government will help them to support their old age for me. I've heard people say that if the police can't catch the murderer, I'll be the murderer, and if I'm shot as a murderer, I'm not wronged, what will happen to my parents?"

The grievances that had been held in his heart for more than ten years poured out, and he cried.

Han Bo also didn't feel good in his heart, and hurriedly used the walkie-talkie to ask the police downstairs to send in a pack of tissues.

After waiting for two or three minutes, when his mood calmed down slightly, Tian Guogang then asked, "What about later?"

"The more I thought about it, the more scared I became, I didn't dare to send people to the hospital again, let alone call the police, I remember that there was a garbage bin in the back, and I ...... Only...... Just put her in the trash. I'm sorry Secretary Li, she's so beautiful, so young, and so nice, she shouldn't lie in such a dirty place.

Thinking of the amount of blood on my hands, body and car, I took off my scarf and wiped it first, not daring to go to the seafarers' club again. I drove the car home, found a stab, went to the river to fetch water to wash the bloodstains, opened the car door to ventilate and disperse the smell of blood, sprinkled flowers and water to cover up, and was busy in the middle of the night. ”

"Later, the more I thought about it, the more scared I became, and I couldn't help but wonder if anyone saw me when I got out of the car, whether anyone saw it when I got into the car, whether there would be wheel prints on the ground, and I had nightmares every day, feeling like a murderer. You found me again, asked where I had been that night, and checked the car while I wasn't looking.

I found that there was no way to go on like this, and only by finding the murderer could I prove my innocence. Before being transferred, Secretary Bi asked me if I would like to go with him, and I said that I wanted to stay in Nangang and work in the Public Security Bureau. Secretary Bi was very disappointed, but he still helped me with the transfer procedures......" (To be continued.) )