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Scheme, pinout (wiring) cable Ericsson T10s, T18s, T28s, A1018s. Encyclopedia of radio electronics and electrical engineering

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Scheme, pinout (wiring) cable Ericsson T10s, T18s, T28s, A1018s

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Random news from the Archive

Teamwork suppresses intelligence 26.12.2012

Researchers from several US institutions set out to find out how the level of a person's mental abilities differs from whether he works alone or in a team where there is a social and intellectual hierarchy. They came to the conclusion that people can unconsciously underestimate their abilities if they feel someone's superiority.

70 students took part in the experiment. To begin with, they took individual tests to determine their IQ. After that, the students were asked to take an IQ test again, having previously divided them into groups of five people. After answering each question, the student could see a computer rating, which showed how his answer was evaluated relative to the other four members of the group, and how places were distributed in other groups.

Although all subjects had approximately the same IQ (about 126), the results of the second - collective - test varied greatly. For some students, IQ remained the same, and for some it dropped significantly. The researchers divided all participants in the experiment into two groups: "high performance" - those whose results were above the average, and "low performance, whose results did not exceed the average. The IQ of students who were assigned to the second group fell on average by 17,4 points.

Also during the second test, some subjects underwent functional magnetic resonance imaging of the brain to study its activity. At the beginning of the study, all the students showed increased activity in the amygdala, a region of the brain that is responsible, among other things, for fear and excitement. But in the course of the study, something interesting began to happen - in those who performed well, the activity of the amygdala gradually decreased, but the activity of the prefrontal cortex associated with problem solving increased markedly by the time the test ended. This was not seen in those who showed the worst results - while solving tests, they continued to be in a state of anxiety, and this did not allow them to reason normally.

Researchers believe that the decrease in results when working in a group is associated with the need for people to maintain a hierarchy of social statuses. The students who showed the worst result seemed worse to themselves than the other members of the group. Because of this, they experienced excitement and could not show their best side, although they had such an opportunity.

There are large differences in the results of the study by gender. Most of the worsening outcomes were women. This difference may have been due to social pressures that make a woman appear dumber in the company of men, a cultural phenomenon that leads some to espouse the idea of ​​separate education.

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