The tendency to respond to stimuli similar to those that preceded operant reinforcement is called

Researchers investigating a rare disorder that affects only a few subjects would most likely use a( n ) _____ design.

A)natural experimental B)experimental C)quasi-experimental D)single-subject experimental

Assimilation is to accommodation as

a. necessary is to optional. b. help is to hinder. c. hinder is to help. d. using is to changing. e. aid is to obstruct