Schizophrenia is characterized by ___________.

A) an inability to be alone
B) negative symptoms such as flat, emotionless voices but not by positive symptoms
C) disturbances in thought and language, perception and attention, motor activity, and mood
D) positive symptoms but not negative symptoms

Which piece of evidence,if it existed,would rule out environmental influences on intelligence

A)  Fraternal twins have different IQs from one another. 
B)  Adopted children have very different IQs from their adoptive parents. 
C)  Identical twins always have identical IQs. 
D)  Children with different diets also have different IQs.

The perceptual tendency to fill in gaps in order to perceive disconnected parts as a whole object is called

A) interposition.
B) closure.
C) continuity.
D) proximity.

A characteristic of children in cross-race friendships is that they ______.

A) are less prone to peer victimization
B) show a higher tolerance for excluding others
C) are more likely to feel less socially safe
D) tend to feel more vulnerable at school