Which method of disciplining a child who is hitting his younger brother is most likely to teach empathy?

A rat learns that pressing the lever in the operant chamber will only deliver food if a red light above the lever is on. In this scenario, the red light is acting as a _________________

A) discriminative stimulus B) reinforcer C) conditioned stimulus (CS) D) punisher

A previously neutral stimulus, that through conditioning acquires the capacity to evoke a response, is

a. a conditioned stimulus. b. an unconditioned stimulus. c. an unconditioned response. d. a conditioned response.