Dr. Simmons has found a strong positive correlation between watching violent cartoons on TV and children's levels of aggression toward others. What can be concluded from this research?
a. Violent TV causes aggressive behavior in children.
b. Aggressive behavior causes children to watch more violent TV.
c. Violent TV viewing and aggressive behavior are unrelated.
d. Watching violent television and children's aggression are related, but possibly not causally.
D
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The "odd" cluster of personality disorders consists of which personality disorders?
a.) paranoid, antisocial, borderline b.) paranoid, schizoid, schizotypal c.) antisocial, borderline, avoidant d.) dependent, obsessive-compulsive, borderline
The IQ correlation is higher for dizygotic twins than for brothers or sisters born at different times. This observation supports which conclusion?
a. IQ scores have been increasing over generations. b. Hereditary factors influence intellectual development. c. Environmental factors influence intellectual development. d. Twins tend to be more intelligent than single-born children.