Increases in obesity rates have occurred in: ________
a. only the United States.
b. only lower-socioeconomic groups.
c. both sexes.
d. only in young people.
Answer: c
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In operant conditioning, reinforcing successive approximations of a desired behavior is a procedure called ________
a. chaining b. shaping c. higher-order conditioning d. counterconditioning
The last resort for severely depressed, suicidal patients may be
a. lithium b. antidepressants c. tranquilizers d. psychosurgery
"Heredity" means
a. ?the biological transmission of traits and characteristics from one generation to another. b. how your traits manifest themselves in your characteristics. c. how cells divide to determine who we become. d. how genes combine to influence our phenotype.
For a positively skewed distribution, the mean usually has a larger value than either the median or the mode
Indicate whether the statement is true or false