Natasha wants to know whether wearing sunglasses helps while driving. In a counterbalanced repeated measures design, the presence or absence of sunglasses would be varied by
A. having all drivers first drive without sunglasses and then with sunglasses.
B. having all drivers first drive with sunglasses and then without sunglasses.
C. having half the drivers first drive without sunglasses and then with sunglasses and having the other half first drive with sunglasses and then without sunglasses.
D. having half the drivers drive with sunglasses and the other half drive without sunglasses.
Answer: C
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Clyde is unmarried and has few friends. Why is he at greater risk for developing coronary heart disease than the general population?
A. He is unlikely to seek help if he notices problems. B. Social isolation has been associated with increased risk for the disease. C. He has no knowledge of his problems. D. He is socially awkward and thus has increased risk for disease.
When desirable or undesirable characteristics of personality are evaluated, we are assessing
a. temperament. b. character. c. personality types. d. popular stereotypes.
At about six months of age, babies begin to verbalize one-syllable sounds called:
a. babbling c. overgeneralization b. syntax d. morphology
When an infant needs to be soothed:
a. breast milk or formula is all that will work. b. it is always a signal that he or she is in pain. c. simply sucking on something may work. d. a salty taste is usually preferred.