Five or more criteria must be met for major depressive disorder to be diagnosed,
according to DSM-IV. Which is not one of these criteria?
(a) markedly diminished interest in pleasure
(b) sleep problems
(c) a weight change of more than 5% in a month
(d) recurrent thoughts of death
(e) excessive ability to concentrate one's thoughts
E
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Lowered performance compared to a previously higher level is referred to as
a. an index. b. deterioration. c. a ceiling effect. d. manifold.
What is the primary difference between temporal summation and spatial summation? a. Only spatial summation can produce an action potential
b. Spatial summation depends on contributions from more than one sensory neuron. c. Temporal summation produces a hyperpolarization instead of a depolarization. d. Spatial summation alters the response of more than one postsynaptic cell.
Regarding reliable associations between therapists' professional background and therapeutic efficacy, researchers
a. have found psychologists provide the best therapy. b. have not found any reliable associations. c. have found that male clients will succeed better with a female therapist. d. have not found talented therapists in any of these professions.
Suppose a researcher compares 50 pairs of husbands and wives on a variety of attitudes. In doing so, the researcher is making use of _________________ samples with a ______________________ design
a. related; matched-samples b. related; repeated measures c. independent; matched-samples d. independent; repeated measures