The current state of knowledge regarding genetics and life experience effects on brain structure and function concludesthat most psychological disorders are
a. the result of a complex interaction of genetics and faulty neurotransmitter circuits.
b. the result of stressful early life experiences and the negative effects such experiences have on brain structure or function.
c. the result of both biological and psychosocial factors.
d. beyond our current ability to understand in any meaningful way.
Question 2
When comparing the brains of rats raised in a rich environment requiring lots of learning and motor behavior with the brains of rats raised as couch potatoes (Greenough, et al., 1990), the cerebellums of the more active rats
a. contained more neuronal connections and dendrites.
b. contained fewer neuronal connections but more dendrites.
c. were less likely to possess pathological neurotransmitter circuits.
d. were exactly the same as the inactive rats.
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