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?

Question

Quizplus · Accepted Answer

The third variable problem refers to the possibility that a correlation between two variables may be explained by a third variable that is related to both. In this case, income may be the third variable that is related to both the number of vacations taken and physical health. Therefore, the association between physical health and vacations may not be a direct causal relationship.

A Psychologist Notes That There Is a Correlation Between Physical