When one manipulates an independent variable, at least how many groups are created?
A) one
B) two
C) three
D) four
B) two
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Although the Durham ruling in 1954 allowed mental health professionals to present information about an accused person's mental state, it became apparent that a. no mental health professional wanted to participate in court proceedings
b. mental health professionals could not reliably assess whether mental illness caused criminal behavior. c. judges were reluctant to include testimony from mental health professionals in their decisions. d. juries were reluctant to consider testimony from mental health professionals.
For many people, a better way to increase a desirable behavior than covert reinforcement is to use
a. mild punishment. b. covert sensitization. c. direct reinforcement. d. self-directed desensitization.
About how long after consumption can marijuana's active ingredient, THC, be detected in the brain?
a. about 2-4 hours b. about 24-36 hours c. about 4-5 days d. about several days to several weeks
In a child with ataxia, a form of cerebral palsy, the muscles
A. are rigid one moment and floppy the next moment. B. often pull the limbs into contorted positions. C. are always limp. D. are inflexible.