The heritability estimates of eating disorders are thought to be
a. large.
b. moderate.
c. small.
d. too inconsistent to have meaning.
b
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Which statement about schizophrenia is accurate? a. Research suggests that schizophrenia is a distinct disorder
b. Individuals do not recover from schizophrenia. c. Lifetime prevalence rates of schizophrenia in the United States are about four percent. d. The causes of schizophrenia are not well understood.
The network of roles, communication pathways, and power in a group is known as
a. groupthink. b. group cohesiveness. c. group structure. d. status comparisons.
Any number of drugs, such as LSD and mescaline, that distort visual and auditory perception are ______
a. barbiturates c. hallucinogens b. opiates d. stimulants
Which of the following concepts does the all-or-none law describe?
A) All dendrites must be hyperpolarized before a neuron fires. B) All neurons in a nerve fire or none of them fires. C) The size of an action potential does not depend on the amplitude of the stimulus that started it. D) The frequency at which a neuron fires is independent of the intensity of the stimulus.