Increased myelination of the corpus callosum __________.
A. accelerates reaction time for gross motor tasks and reduces reaction time for fine motor tasks
B. accelerates reaction time for both gross motor and fine motor tasks
C. accelerates reaction time for fine motor tasks and reduces reaction time for gross motor tasks
D. decreases reaction time for gross motor tasks and reduces reaction time for fine motor tasks
Answer: B
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In the Dutch study by van den Boom (1994), mothers of temperamentally irritable infants were randomly assigned to either be trained in sensitivity and responsiveness or to a control group that received no intervention. Several months later, infants in the experimental group were __________.
A. more sensitive than those in the control group B. more responsive than those in the control group C. even more irritable than before, and more irritable than infants in the control group D. more likely to be securely attached to their mothers than infants in the control group
Tyler was an epileptic who had portions of his hippocampus removed to control his seizures. Based on what is known about the functions of structures within the forebrain, you should predict that this surgery is likely to affect Tyler's ability to:
a. form new memories b. control his eating and drinking c. interpret sensory information accurately d. express appropriate emotions
Psychoactive drugs can be placed on a scale ranging from
a. addiction to withdrawal. b. dependency to addiction. c. stimulation to depression. d. hallucinogenic to analgesic.
Extinction in operant conditioning occurs when the ____
a. ?neutral stimulus does not get reinforced b. ?conditioned stimulus is presented without the unconditioned stimulus c. ?behavior is no longer reinforced d. ?individual consciously chooses not to engage in the behavior