The third variable problem occurs when one variable, for
example your independent variable, is actually linked to another variable that you are not manipulating or controlling for. In this example, what might the third variable be? (Example: The larger a child's shoe size, the more vocabulary she has.)
a) her gender
b) her age
c) her dress size
d) her language skills
Answer: b
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Which of the following questions would be of the greatest interest to a health psychologist?
a. What are the causes of coronary artery disease in African-American men? b. What is the reason why children from single-parent homes are more likely to become smokers than children from two-parent homes? c. What methods can be used to increase the motivation of an adult who has had a heart attack to start exercising regularly? d. What is the relationship between the influenza virus and major depression?
Three-fourths of all conceptions fail to survive beyond 6 weeks
a. True b. False