Aggression in response to a threat is a type of ___ aggression

A(n) _____ is a drug that blocks the actions of a neurotransmitter

a. agonist b. antagonist c. stop agent d. endorphin

Research methods that depict behavior, but do not necessarily yield causal explanations, are called:

a. experimental methods. b. blind studies. c. significance tests. d. descriptive methods.