Psychologists testing the relationship between environment and development developed the “rat wonderland” experiment. the control group rats were placed in plain cages, and the experimental group rats were placed in enriched cages with colorful patterns, platforms, and ladders. rats that were raised in the enriched cage environments a. had smaller, lighter brains. b. had brains with a thinner cortex. c. were superior at learning mazes. d. exhibited all of these characteristics.

Aresearcher conducts a focus group to learn about attitudes towards hygiene and disease prevention. two weeks after the focus group, the researcher learns one of the subjects had a heart attack at home and was hospitalized, but made a full recovery. based on dhs regulations, the researcher report this event to the irb? no, this does not need to be reported since the subject had the heart attack when they were home, not at the focus group.no, this does not need to be reported since it is unrelated to participation in the study.no, this does not need to be reported because two weeks have passed.no, this does not need to be reported since the subject recovered.

Samantha is looking for a boyfriend. based on the gender differences explained in this activity, which is she likely to prefer?

Quick using the information in the graph, one might speculate that a) w.w.i created increased job opportunities in the u.s. b) the election of president hoover in 1936 caused unemployment to decline. c) the return of soldiers following w.w.ii caused unemployment to increase in the u.s. d) the new deal programs of president roosevelt created employment opportunities in the u.s.