Which statement best supports the hypothesis that sleep has an adaptive function

A)  People who sleep longer also tend to live longer. 
B)  Sleep deprivation reduces fertility. 
C)  Our brains use 30 percent less energy when we sleep. 
D)  Species that sleep more are more competitive.

Which of the following is NOT a side effect of marijuana?

A) decreased fertility
B) risk of smoking-related cancers
C) diminished motor coordination and reaction times
D) strong likelihood of addiction

Around the sixth month, an infant searches for an object that has rolled out of sight. In the context of Piaget's stages of development, this is evidence of _________.

A) canalization
B) habituation
C) object permanence
D) object representation

Compared to Freud,Horney

A) believed in the therapist-client working relationship.
B) focused on her patients' unconscious minds.
C) rejected psychoanalysis as a technique for therapy.
D) placed more emphasis on the ego and the id conflict than Freud.

Studies of bereaved spouses suggest that grief reactions fall into various different patterns.Which type of grief is referred to as the resilient pattern

A)  absent grief which is characterized by the absence of depression 
B)  absent grief which is characterized by low levels of depression 
C)  chronic grief which is characterized by low levels of depression 
D)  common grief which is characterized by low levels of depression

A dog, taught to salivate to the sound of a buzzer, learned that the buzzer was no longer followed by food and stopped salivating to the buzzer. If the buzzer was again sounded after a few weeks, and the dog was in the same environment, the dog would probably ________.

A) not salivate
B) salivate
C) require many trial pairings of the buzzer and the food to reestablish the association and begin salivating to the buzzer again
D) salivate only if the buzzer was dissimilar to the one on which it was conditioned