Psych 3cc3 Deception detection.docx

Psych 3cc3 Deception detection.docx - 1 Ekman et al(1999...

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1. Ekman et al (1999) tested the ability of legal and psychological professionals to detect deception from video records of statements. Their results indicated that: ( 1 point) Select your answer: 1. overall, law officers and psychologists are better at detecting lies than at recognizing true statements. 2. clinical psychologists with an interest in deception are somewhat better at detecting it than are other psychologists. 3. on average, law officers, judges, and psychologists detect deception at above- chance levels. 4. overall, sheriffs and judges are no better at detecting deception than are clinical or non-clinical psychologists. 5. all of the above 2. In making truthful/untruthful judgments on the basis of polygraph lie detector tests, we identified four basic decision categories into which a decision could fall. A case in which an innocent person was correctly judged to be innocent would be a: ( 1 point) Select your answer: 1. hit 2. correct rejection 3. miss 4. false alarm 5. none of the above 3. We described the results of several tests of the CQT and GKT. Which of the following statements about the results of those tests is NOT TRUE ? ( 1 point) Select your answer: 1. #blind' examiners have much lower overall accuracy than do the actual examiners. 2. #blind' examiners have a higher proportion of inconclusive tests than actual examiners do. 3. the overall accuracy of polygraph lie detector tests is considerably better than chance. 5 2 4
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4. overall, both the CQT and GKT are better at detecting lies than at clearing truthful individuals. 5. All of the above ARE true. 4. Which of the following is a common criticism of the CQT? ( 1 point) Select your answer: 1. Anxiety over possible conviction may lead truth-tellers to respond more to Irrelevant than to Relevant questions. 2. Truth tellers may respond less to Irrelevant than to Control questions because they are afraid of the possible negative consequences of telling a lie - even though they are being truthful. 3. Liars may respond more to Irrelevant than to Control questions because they are familiar with the Control questions from earlier interviews. 4. Anxiety over possible conviction may lead truth-tellers to respond more to Relevant than to Control questions. 5. None of the above 5. We described the results of several tests of the CQT and GKT. What all those tests consistently indicate is that: ( 1 point) Select your answer: 1. #blind' examiners have a higher proportion of inconclusive tests than actual examiners do. 2. the overall accuracy of polygraph lie detector tests is only slightly better than chance. 3. overall, both the CQT and GKT are better at detecting lies than at clearing truthful individuals. 4. actual examiners are better than #blind' examiners at detecting liars, but #blind' examiners are better than the actual examiners in recognizing truth-tellers.
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