Which parental style is characterized by warmth, control, and communication?

One characteristic of schizophrenia that differentiates it from other disorders described in DSM-IV is that the concept of schizophrenia

a. is made up of a number of behaviors or symptoms that aren't necessarily shared by all the people with the disorder b. has been recognized as a serious problem since the early 1800s c. was first identified in the US d. has a single biological cause that has been identified through the use of PET scan technology.

In operant conditioning, reinforcement is:

A) never presented. B) presented regardless of the organism's behavior. C) presented as a consequence of the organism's behavior. D) presented prior to the organism's behavior.