According to __________ theory, social barriers to engagement, not the desires of aging adults, cause declining rates of interaction
A) continuity
B) activity
C) socioemotional selectivity
D) disengagement
B
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Suppose we present a weak, brief stimulus that an observer does not perceive consciously. What happens if we gradually increase the stimulus from one trial to the next? a. Either activity spreads widely in the brain or it does not. Intermediates do not occur. b. For stronger stimuli, activity gradually spreads to more and more of the brain
c. For stronger stimuli, action potentials gradually travel faster and faster. d. For stronger stimuli, activity gradually persists longer and longer in the brain.
Which test maps changes in blood flow or oxygen use in the brain as a patient thinks or behaves?
a. an electroencephalogram (EEG) b. magnetic resonance imaging (MRI) c. a computerized tomography scan (CT scan) d. positron emission tomography (PET)
_____ is MOST known for his work on conditioned taste aversion.
A) Pavlov B) Garcia C) Watson D) Thompson
Your child fears going to the doctor because on her last visit she received a painful treatment. Now every time your child visits the doctor the nurse is with him. You notice the child seems afraid of the nurse even though she has never administered a painful treatment. What is this probably due to?
a. higher-order conditioning c. stimulus discrimination b. stimulus overload d. response generalization