In the early twentieth century, many experts incorrectly attributed the disease pellagra to unsanitary sewage removal instead of a dietary deficiency. Their failure to consider alternative explanations for the disease and to leap to an untested conclusion is an example of:

Which of the following would be considered a symptom of an internalizing disorder?

a. irritable mood b. antisocial behavior c. aggression d. somatic complaints

Ageism is insidious when concerning the elderly because

their political voice effects change only minimally. it undermines their feelings of competence and self-esteem. youth rebel against ageism. the elderly are unable to participate in many activities that would lengthen their lives.