Criminal Psychology

"How do you catch this, do you pull the net for investigation?" Jiang Chao sighed. "I honestly don't think I have enough time for inspection."

"Yeah, so someone needs to come out and talk."

"what?"

"If we are sure there will be the next live broadcast, that is to say, there are still people who may commit crimes in this school or in this entire city, we can find these people by some methods and talk."

"The question is, are there any quick ways to find someone in psychology?"

"To be precise, it's math."

Lin Chen took out three pieces of paper from his pocket, which were what he had been carrying with him today. Now it seems that he is very fortunate that he did not throw away these pieces of paper because of trouble.

"Used by the dynasty," he said to Xing Conglian.

"Why so polite, as long as it doesn't kill you, you can use it." Xing Cong even answered with a smile.

The teenager sitting aside raised his head from the screen, holding a pen on his mouth, apparently still studying how to word it, in order to catch those perverts: "Boss, I am easy to rebel, do you know?"

Lin Chen laid three sheets of paper on the table and said, "In fact, through the results of mmpi, we found that Wang Shishi, Xu Haozhen, and Jiang Liu had similar personality traits. Then we can use this feature in turn to screen for possible groups. . "

"Find out who might participate in the next live broadcast?" Wang Chao lay back on the table the next second. "There are 30,000 teachers and students at Guangyongchuan University. Want to find three people to participate in the next live broadcast? Achen Don't say, this is really a haystack. "

"You mean, first screen out those with a social introvert of 70 or more?"

Lin Chen nodded. After the incident, he didn't have any surprises about Xing Lianlian remembering the keywords and scoring criteria.

He glanced at the dynasty, and the boy consciously spit out the signature pen in his mouth, not forgetting to wipe the bite with a t-shirt.

After receiving the pen, he drew a large circle on the paper, explaining: "Suppose this is a socially introverted high-scoring crowd ..." Then he drew a small circle intersecting with the large circle. " This is a possible offender, "he said, smoothing out the intersection of the two circles," this is a potential group we may find out. "

"I got it! This is for me to hit a library first, get out the information of this test, and then screen out the students who scored 70 or more. How many people are there?"

"Hit what library." Xing Conglian knocked on the dynasty, "We can adjust the data through due process."

"70 points is roughly two standard deviations in the mean, so conservatively estimate that there will be 4% of the abnormal population." Lin Chen answered.

"Then there will be 1,200 people in Sichuan Yongchuan University!" The Dynasty exclaimed.

"Is there any way to narrow it down?" Xun Conglian asked.

"Yes," Lin Chen replied simply, "another personality test."

Several of the suicides in this case showed the characteristic of a major change in personal personality, so the degree of suspiciousness was high for students who had major changes in scores in the second personality test.

"I see." Xun Conglian said.

"But there is still a problem." Lin Chen looked at Xun Conglian. "Suppose we conduct a personality test on our students with great fanfare.

"This is not a big problem. Now that there is such a serious suicide incident in the school, isn't it normal to check the mental health of students?" Hearing Lin Chen's concerns, Xing Conglian continued to laugh, "And wait for you Is it really not fair to identify suspicious students as an excuse to interview them? "

The words of Xun Conglian made Lin Chen speechless: "You are really ..."

"What is it?"

Lin Chen shook her head, expressing helplessness.

"Old and treacherous and cunning are especially shameless!" Comrade Xiaochao answered extremely injustice.

Xing Conglian didn't seem to care about these evaluations. He frowned slightly and asked the dynasty: "How long will it take you to complete the initial screening?"

"This is fast."

"How long does it take for the second strategy?" He asked Lin Chen again.

"The test takes about an hour, but from organizing staff, arranging test locations to notifying students to take the test, the process will be longer and the student base is huge ..."

Xun Lian heard the words and glanced at the time: "It is 16:37."

"Yeah, it's almost time to get off work. Even if the counselor is notified now and the test is scheduled, the first batch of student tests will probably start around 19:00."

"Do you have an estimate, which department and grade are the students we are most likely to find?"

"In fact, the scores of students in each department will not be significantly different, but the proportion of psychologically unhealthy students in the department of psychology is relatively high ..."

Xun Leng couldn't help but laughed: "Is this self-spoken?"

Lin Chen picked his lips and continued: "According to our school's data, there are also medical school and chemical school students ...

"About how many students are involved?"

"The report boss, a total of 3158 people." Comrade Wang Xiaoxiao quickly answered.

"Meaning, the test could not be completed today anyway, right?"

"Even if 20 classrooms are open at the same time and 800 students take the test, it will take 5 hours to complete."

"As soon as tomorrow morning."

But even tomorrow morning, 20 hours have passed.

Xun Lian nodded and continued to ask, "Can you narrow it down a bit?"

"From a grade perspective, freshman freshmen have just taken the entrance test, so there is no need to take the test again. Many senior students have begun internships and are no longer on campus. They are directly ruled out. Therefore, it is better to directly choose a sophomore or junior.

The words of the two had just fallen, and they only heard the dynasty hit the enter key with ease.

"A total of 1342 people!"

Working with high-efficiency partners is really very pleasant: "I need to trouble you to select sophomores and juniors from the Department of Psychology, Medical College and School of Chemistry, and then pull me a list." Lin Chen said.

"Small bit." The teenager heard the words and typed the keyboard a few times. He looked at the generated data and stared, and said to Lin Chen, "Achen, don't say that, your psychology department is really very shy."

"Yes, I have always been strange." Lin Chen shrugged a rare shrug, saying, "Send me the list, resume and test results of these people."

"already sent."

In short, Lin Chen probably understood why Xun Conglian had to bring his dynasty with him. It was really overused.

After the teenager said, he pulled out a tablet from his backpack and handed it to him: "You can use this to see."

"If we have this list in hand, can we not cross-reference the circle of friends of the six deceased in this case and see if they overlap?" Jiang Chao asked suddenly.

"Yes, you can." The dynasty pulled out a piece of sugar and threw it into his mouth. "Why do you find someone to do it? I have a lot of things to do."

Even from the beginning to the end, the dynasty was easy and leisurely, and the investigation is still stressful.

Large-scale crowd screening and urgent time are almost natural contradictions.

He continued to connect to the dark network and pressed the refresh button a few times in annoyance, as if he could get a response from the other end of the network.

"If Captain Jiang has a list, can you help him with the comparison analysis?" Lin Chen held the boy's hand in a soft voice.

"The comparison takes a long time, and there hasn't been a response from there, I will stare at the reply."

The young man refused him.

Probably because his ability can hardly be exerted in this dark world, so he more desperately wants to play a role and overcome something.

Seeing through the mind of the boy, Lin Chen shook his head and said, "You should do more important things."

"Hear no, wait for Ren Xian to watch the reward. Anyway, if you teach it, the level will not be too bad." Xun Conglian was hardly rare, but "but within half an hour, we haven't When we receive a response, we need to take some more extreme measures. "

"What do you want to do?" Lin Chen asked.

"Our fishing net is too small ..." Xing Conglian looked at Lin Chen. "It is mainly because you inspired me to ask for a needle in the haystack. Assuming the murderer behind the scenes is using live broadcast to make money, then he can't exclude the newcomer too much. There are also many underground forums on the Internet. We can write some topic posts, um ... "

"You want to say, let me imitate the tone of a psychopath, write a topic post, distribute it on major websites, and expand the fishing net?" Lin Chenmin noticed the trap.

"You are more professional." Xing Conglian was a little embarrassed, so he took the initiative to say, "I can take charge of translation."

Although a little speechless, I have to say that the opinion of Xun Conglian is still very reliable. He just wanted to answer, but he listened to the other party and said, "Counselor Lin knows where the toilet in the office building is, can you take me down?"

Xing Conglian is probably a person talking alone, and he has to take into account the type of mood of other people in the room.

Lin Chen went out with him. Sure enough, the Captain of the Interpol did not mean to solve the physical problem at all. He just found a window, opened a half-window, and lit a cigarette.

"What's up with him?"

Lin Chen was a little surprised. He didn't expect Xunlian to call himself out to ask the dynasty's psychological condition.

"He should be nervous."

"Are you nervous?"

The problem changed too quickly, and Lin Chen couldn't respond.

"not yet."

The light-colored smoke rose, and Lin Chen was staring at him uncomfortably.

"Anyway, I hope you don't feel too much pressure, if you have any questions, you can tell me." Finally, Xun Conglian said.

At that moment, Lin Chen suddenly understood the intention of Xing Conglian. He almost shook his head helplessly, and Xing Lian really passed through his head.

From beginning to end, Xun never ignored the most critical issue. He knew that Zheng Dongdong had resentment with him and Chen steward, and that he could use these two people properly to arrange a big trap. Such a black hand behind the scenes seemed to him Everything is too familiar.

"If you want to know, you can ask me to drink after the case is over."

Lin Chen looked up, looked at Xun Conglian's eyes, and said so.