In naturalistic observation, the observer's presence may make the measures
a. comparative
b. error free
c. correlational
d. reactive
D
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Drinking coffee is correlated with lower rates of
A. Huntington's disease. B. amyotrophic lateral sclerosis. C. Parkinson's disease. D. polio.
When an infant's actions are intentional and goal-directed he or she is in sensorimotor substage ____
a. 1: simple reflexes b. 2: first habits and primary circular reactions c. 3: secondary circular reactions d. 4: coordination of secondary schemas
Which statement is true about retirement satisfaction?
A) Well-educated people with complex jobs adjust less favorably to retirement. B) Leaving a high-stress job is linked to greater difficulties during the retirement transition. C) Retirement can enhance marital satisfaction by granting husband and wife more time for companionship. D) Moving out of a low-stress job is associated with gains in psychological well-being following retirement.
Which of the following best describes free radicals?
A. The tiny gap between nerve cells across which neurotransmitters pass. B. Specialized cell that supports, protects, or nourishes nerve cells. C. By-products of oxygen metabolism. D. Thick bundles of nerve cell fibers that connect the two cerebral hemispheres.