People with a rare type of brain damage have trouble seeing whether something is moving, or if so how fast and which direction. A study of this condition would probably rely on which method?

Sigmund Freud divided human development into ____ stages

a. psychosexual b. psychosocial c. psychobiological d. psychocognitive

What technique ensures that personal characteristics that might affect the outcome of the experiment are divided proportionally among the participants in the different groups, making groups equivalent?

a) Dependent variables b) Random assignment c) Independent variables d) Statistics