In the prisoner's dilemma, the action that seems best to each individual is disadvantageous to the group

An infant who misses her teddy bear at bedtime and will not go to sleep without it is demonstrating that she does not yet understand the concept of object permanence

Indicate whether this statement is true or false.

Julian seeks professional help for his fear of spiders

In stages, his therapist shows him pictures, movies, and models of spiders, then a real dead spider, a small live spider in a jar, several live spiders in a jar, and finally a live spider loose in the room. At each stage, he made sure that Julian was fully relaxed. This technique is known as _______. a. free association b. desensitization c. aversive conditioning d. transactional therapy