In the majority of cases, the cause of mental retardation is ______
a. clearly identified genetic abnormalities
b. unknown
c. poor prenatal nutrition
d. prenatal drug abuse by the mother
B
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Most forms of communication among non-human animals are
a. conscious. b. a symbolic expression of private events. c. learned and therefore entail some form of consciousness. d. automatic and do not involve consciousness. e. relatively efficient.
Closure is the tendency __________.
A. to perceive objects, or figures, on some background B. to complete figures that are incomplete C. to perceive objects that are close to each other as part of the same grouping D. to perceive things with a continuous pattern rather than with a complex, broken-up pattern
Reduced light causes decreases in _______ neurons, which is thought to contribute to the experience of seasonal affective disorder
a) serotonin b) dopamine c) GABA d) epinephrine
The trait theory of personality proposes all these except:
A) The theory begins with a well-defined theory of instincts. B) Every trait applies to all people. C) Traits can be quantified. D) People exhibit the same traits in different situations.