Among the possible causes of aggression are genetic factors, family environment, and neurochemical factors. What label would be used for aggression in a study that involved these three factors?

Stan has been extremely afraid of cats since he was scratched as a 5-year-old

Whenever he sees a cat, he remembers the time he was scratched across his face and starts to feel afraid. If a cat comes towards him, he often runs away immediately, as he is afraid of being scratched again. Stan's behaviors and recollection of this trauma are a result of the _____ in the limbic system. A) hippocampus B) thalamus C) amygdala D) medulla

Injecting leptin into a leptin-deficient mouse would cause it to:

a. become sedentary. b. experience pleasure. c. gain weight. d. lose weight.