William Verplanck's Work on the Reinforcement of Verbal Behavior Showed

Multiple Choice

William Verplanck's work on the reinforcement of verbal behavior showed that .

A) what people say depends in part on the reactions of other people to what is said
B) it is hard to get people to express opinions
C) people will stick to a topic if not interrupted
D) the history of reinforcement affects the frequency of verbal behavior, but not its content