In a study by Sameroff et al. (1993), as the number of risk factors in the child's environment __________, IQ scores __________.
A. increased; increased
B. increased; decreased
C. decreased; remained the same
D. decreased; decreased
Answer: B
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Newsom (1999) proposes a model of how certain aspects of care can produce negative perceptions of care directly or by affecting the interactions between caregiver and care recipient. In this model, which of the following is a care recipient variable?
a. quality of help b. burden c. life events d. need for independence
When a researcher conducts an experiment and is fairly certain that changes in the independent variable caused changes in the dependent variable, that experiment is said to be high in ____
a. construct validity b. construct validity of the effect c. internal validity d. external validity
With regard to Masters and Johnson's model of sexual response, sexual problems occur at all but which of the four stages?
A. resolution B. excitement C. orgasm D. plateau
The most consistent withdrawal symptom after chronic caffeine use is
A. headache. B. drowsiness. C. nervousness. D. inability to sleep.