Out of all cases in which an innocent person has been cleared of a crime due to DNA evidence, how many involved mistaken identification of the perpetrator by an eyewitness?
a. ?25%
b. ?50%
c. ?75%
d. ?100%
ANSWER:
c
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Correction for attenuation is used
a. to estimate the validity of a test. b. to correct for tests that are short. c. to correct for tests that are long. d. to estimate the true correlation between variables that have been measured with error.
An infant demonstrates his or her attachment to a caregiver by . . .
a. Becoming distressed when the caregiver leaves the infant alone b. Showing delight when the caregiver returns c. Both of the above d. Neither of the above
To study the effect of daycare programs on academic performance, a researcher follows the same 30 children who did or did not attend daycare programs as they go through kindergarten to sixth grade. Which type of design is the researcher using?
a. Cross-sectional b. Cohort c. Latitudinal d. Longitudinal
For men, dry orgasms
A) occur only in prepubertal boys. B) can occur in young and older men. C) can occur before but not after a main orgasm. D) are a danger signal since they are a result of retrograde ejaculation.