Principles of Exploratory Factor Analysis1
نویسندگان
چکیده
One goal of science is to understand the relations among variables, and the object of factor analysis is to aid scientists in this quest. Factor analysis can be thought of as a variablereduction procedure, in which many variables are replaced by a few factors that summarize the relations among the variables. Consequently, in its broadest sense factor analysis is a procedure for identifying summary constructs. If one already has a theory about the structure of a set of variables, one can investigate the extent to which that theory accounts for the relations among the variables in a sample of data; "confirmatory" factor procedures are used for this purpose. "Exploratory" factor procedures, the subject of this chapter, are used to discover summary constructs when their nature is still unknown. Over the years since its development, factor analysis has been used for a wide variety of
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