This is a method of data analysis that pools findings across multiple independent studies addressing a similar question.

The biggest problem with the Kinsey studies was that

a. the groups he studied were not representative samples of the U.S. population b. the interviewers were not well trained c. the samples were very small d. all of the above

Which of the following is the best example of the type of data that an epidemiologist might use?

a) a community's hospital records b) results of a person's psychological testing c) surveys about attitudes toward mental illness d) changes in symptoms over the course of therapy