Introduction: The Basics of Scale Reliability
You can compute coefficient alpha when you have administered a multiple-item rating scale to a group of participants and want to determine the internal consistency of responses to the scale. The items constituting the scale can be scored dichotomously (scored as “right” or “wrong”) or the items can have a multiple-point rating format (e.g., participants can respond to each item using a 7-point “agree-disagree” rating scale).
This chapter shows how to use the SAS PROC CORR procedure to compute the coefficient alpha for the types of scales that are often used in social science research. However, this chapter does not show how to actually develop a multiple-item scale for use in research. To learn about ...
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