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Why Would They Falsely Confess？
Why on earth would an innocent person falsely confess to committing a crime？ To most people, it justdoesn&39;t seem logical. But it is logical, say experts, if you understand what could happen in a police interrogation(审讯) room. Under the right conditions, people&39;s minds are susceptible (易受影响的 ) to influence, and the pressure put on suspects during police grilling (盘问 ) is enormous.
46"The pressure is important to understand because otherwise it&39;s impossible to understand why someone would say he did something he didn&39;t do. The answer is to put an end to an uncomfortable situation that will continue until he does confess." Developmental psychologist Allison Redlich recently conducted a laboratory determine how likely people are to confess to things they didn&39;t do.47The researchers then intentionally crashed the computers and accused the participants of hitting the "alt" key to see if they would sign a statement falsely taking responsibility.
Redlich&39;s findings clearly demonstrate how easy it can be to get people to falsely confess: 59 percent of the young adults in the experiment immediately confessed.48Of the 15 to 16-year-olds, 72 percent signed confessions, as did 78 percent of the 12 to 13-year-olds.
"There&39;s no question that young people are more at risk, " says Saul Kassin, Professor at Williams College, who has done similar studies with similar results.49A psychology Both Kassin and Redlich note that the entire "interrogation" in their experiments consisted of a simple accusation-not hours of aggressive questioning-and still, most participants falsely confessed.
Because of the stress of a police interrogation, they conclude, suspects can become convinced that falsely confessing is the easiest way out of a bad situation.50
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The study made by Brook‘haven National Laboratory shows__________．
The main difference between the "R" strain and the "S" strain lies in their__________．
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High Blood Pressure
There is evidence that the usual variety of high blood pressure is，in part，a familial disease．Since families have similar genes as well as similar environment，familial diseases could be due to shared genetic influences，to shared environmental factors，or to both．For some years，the role of one environmental factor commonly shared by families，namely dietary salt，has been studied at Brook—haven National Laboratory．These studies suggest that chronic excess salt ingestion(摄取)can lead to high blood pressure in man and animals．Some individuals，however，and some rats consume large amounts of salt without developing high blood pressure．No matter how strictly all environmental factors were controlled in these experiments，some salt-fed animals never develop hypertension(高血压)whereas a few rapidly developed very severe hypertensions followed by early death．These marked variations were interpreted to result from differences in genetic constitution．
By mating in successive generations only those animals that failed to develop hypertension from salt ingestion，a resistant strain(the R strain)has been evolved in which consumPtion of large quantities of salt fails to influence the blood pressure significantly．In contrast，by mating only animals that quickly develop hypertension from salt，a sensitive strain(the S strain)has also been developed．
The availability of these two strains permits investigations not therefore possible．They provide a plausible laboratory model on which to investigate some clinical aspects of the human developing methods by which genetic susceptibility(敏感性)of human beings to high blood pressure can be defined without waiting for its appearance．
The main idea of this passage is__________． 查看材料
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