Down's syndrome is caused by:
A) alcohol abuse by the mother at the time of conception.
B) sex-linked chromosomal abnormalities.
C) an extra chromosome on the 21st pair.
D) drug abuse by the mother during pregnancy.
C
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According to realistic group conflict theory, white people should show the most prejudice against minority groups when ____
a. they have had little to contact with them b. the economy is doing poorly, and whites feel as though they are competing with minorities for a scarce supply of jobs c. the economy is doing well, and whites feel that minorities are getting jobs that they don't deserve d. whites feel as though minorities are not trying hard enough to get jobs and play a role in the economy
Children are most affected by ____ when reporting and describing incidences of sexual abuse
a. siblings b. mother c. father d. peers
Pica has been successfully treated using operant conditioning. Each time an inedible object was selected, the subject received ____. Each time an appropriate, edible object was selected, ____ was presented.
A. praise; criticism B. a consequence; reinforcement C. negative reinforcement; reinforcement D. mild punishment; reinforcement
The fact that you can't feel your watch unless you shake your arm might mean that _________ are the touch receptors mediating your awareness of the touch of your watch
a. Meisner's corpuscles b. free nerve endings c. Ruffini's endings d. Merkel's endings