A researcher randomly assigns 1,000 people who are invited to participate in a telephone survey to one of two groups: those receiving a gift certificate and those not receiving a gift certificate. Hang-up rates for the two groups are compared. This is an example of what kind of research?

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Methodological research focuses on exploring the efficacy and effectiveness of different data collection methods. Outcomes research focuses on the results of an intervention. Survey research is descriptive research.

A Researcher Randomly Assigns 1,000 People Who Are Invited to Participate