That fathers develop postpartum depression contradicts the idea that postpartum depression is solely caused by postnatal hormonal change.

Baby Calinda sucks on a bottle. The taste of the sweet liquid increases Calinda's sucking. This is an example of

A) operant conditioning. B) habituation. C) classical conditioning. D) extinction.

According to psychoanalytical theory, Denzel will adopt his society's standards of moral behavior through the process of

A) choice. B) motivation. C) biological necessity. D) internalization.