Baby Lulay sucks on his own toes in the same way over and over again. This sequence of behaviors is an example of a:

According to cognitive dissonance theory, soldiers may reduce their guilt about killing innocent civilians during wartime by

a. dehumanizing their victims. b. killing more enemy soldiers. c. going into therapy. d. telling themselves that the war is almost over.

Research by Hubel and Wiesel on visual deprivation in cats demonstrated that

a. visual deprivation led to permanent vision loss in both kittens and adult cats. b. visual deprivation led to permanent vision loss in kittens and but not adult cats. c. visual deprivation led to permanent vision loss in adult cats but not kittens. d. visual deprivation had no long-term impact on either kittens nor adult cats.