Dee Dee has a problem with one of the neurotransmitter systems in his brain, and the result is that he suffers from schizophrenia. Which of the following neurotransmitters is most likely to be the problematic system?
a) glutamate
b) epinephrine
c) acetylcholine
d) gamma-aminobutyric acid (GABA)
ANS: A, The neurotransmitters glutamate, dopamine, and serotonin have all been implicated in studies of the cause of schizophrenia.
Psychology
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Kara, a 2-year-old, is a participant in a research study on infant temperament. Which of the following characteristics is most likely to be assessed in this study?
a. Kara's attention span b. Kara's memory for objects c. Kara's social behaviors d. Kara's alertness on mental tasks
Psychology
The fossil evidence indicates that one of the oldest known hominid species, Ardipithecus ramidus, existed over_________ years ago
a. 4.4 million. b. 1.8 million. c. 2.4 million. d. 1.5 million.
Psychology