Phencyclidine (PCP), which can produce psychotic symptoms resembling schizophrenia, has which effect?
a. It inhibits the NMDA glutamate receptors
b. It interferes with dopamine release.
c. It prolongs activity at serotonin synapses.
d. It directly stimulates acetylcholine receptors.
a
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According to Freud, a person may become fixated at a particular psychosexual stage because of
a. permissiveness on the part of the person's parents. b. a genetic predisposition for fixation. c. either excessive gratification or excessive frustration of needs. d. abnormalities in brain chemistry that develop prenatally.
According to Wundt, empiricism lacked an appreciation of:
a. innate ideas. b. the laws of association. c. volitional processes. d. secondary qualities.
The long, threadlike structures that are located in the nucleus of each cell in the body are called
a. genomes. c. RNA. b. chromosomes. d. spirals.
Which of the following has been found to be lower in people who suffer from autism?
a) absolute thresholds of some aspects of vision, sound, and touch b) absolute thresholds of some elements of smell and taste c) just noticeable differences of smell and taste d) difference thresholds of vision and smell