KEY FEATURES: Introduces students to developing research questions and shows their importance in driving research design. Rarely taught topics, such as how to enter and clean data, offer students information missed in both research methods and statistics courses. Shows how to write up survey results for academic, business and nonprofit reports to alleviate the confusion students feel about how to write up findings. Rigorous treatment of sampling focuses on many sampling issues from probability theory to weighting. Offers the process of actually conducting a survey with advice on administering surveys, incentives, and improving response rates.

What Is Criterion Validity?

Erin Ruel

Criterion validity assesses the accuracy of our survey questions to some established, independent instrument that measures the same underlying concept. If the two correlate highly, then we have validated our survey question measures with the instrument. For example, if we want to predict who will do well in college, then we want to measure college success, meaning grade point average (GPA). What is a good criterion for this? Colleges and universities tend to use the SAT or ACT scores for this. If SAT scores and college GPA are highly and positively correlated, then SAT scores are a good criterion.

Use of SAT scores as a criterion for future GPA is an example of predictive criterion validity because the criterion is ...

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