A Psychologist Notes That There Is a Correlation Between Physical

question 172

Multiple Choice

A psychologist notes that there is a correlation between physical health and the number of vacations that a person takes. According to him, people who take more vacations tend to have better physical health. After thinking about this result, you realize that this association may be due to a third factor: income. People with more income can afford more vacations and can afford better health care. Your explanation for this is most consistent with which limitation of correlational research?

• A) the third variable problem
• B) the bidirectional causality problem
• C) the placebo effect
• D) experimenter expectancy effects

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