The most important feature of a cross-sectional study is that it involves participants who belong to different

A) ethnic groups.
B) cohorts.
C) social classes.
D) nationalities.

Answer: B

Psychology

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When Luke kissed Laura, her heart rate increased. Luke always wore Old Spice after shave. Whenever Laura smelled Old Spice, her heart raced. Luke's kiss was the _______________

a. unconditioned stimulus b. unconditioned response c. conditioned stimulus d. conditioned response

Psychology

According to Freud, psychological problems result from

a. catharsis. b. the failure to release psychic energy. c. trauma. d. organic disequilibrium. e. regression.

Psychology