Which of the following statements about the prevalence of eating disorders is true?
A) While the incidence of anorexia has been increasing, there is no evidence to suggest a change in the
incidence of bulimia.
B) While there is no evidence to indicate that the incidence of anorexia has been changing, the
incidence of bulimia has been declining.
C) The incidence of anorexia increased during the twentieth century, but the incidence of bulimia
increased until the 1980s, then decreased and has been stable since the 1990s.
D) While the incidence of anorexia has been increasing, the incidence of bulimia has been declining.
C
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A psychology teacher wants to determine whether computer-aided learning will produce higher standardized test scores than a usual lecture format. In this example, the independent variable is the
a. individual students. b. students' previous grades in psychology. c. test scores. d. students' interest in psychology. e. method of instruction.
Which of the following statements is true?
A) Members of all cultures experience similar emotions, revealing that culture has a large influence on feelings. B) Members of all cultures interpret emotional facial expressionssimilarly, revealing that culture has a major influence on feelings. C) Members of cultures from all over the world vary on which facial expressions reflect happiness, sadness, and fear. D) People are more likely to express similar feelings in a strong situation.