Keith Was Beaten with a Belt When He Was Little

Multiple Choice

Keith was beaten with a belt when he was little every time he did something wrong.He always knew it was coming because he would hear the jingling of his father's belt coming down the hallway right before the beating began.To this day,Keith can't stand the sound of belt buckles,keys,or anything metallic.The fact that sounds similar to belt buckles also trigger the same fear response is called

A) systematic desensitization.
B) stimulus generalization.
C) stimulus discrimination.
D) conditioned tolerance.