ABSTRACT
Rotation of factors is a case of linear transformations of matrices. Visual rotation was the original method and is still used as a criterion that many analytic approaches attempt to duplicate; with appropriate programming for time-sharing computer systems, visual rotation can now compete with analytic rotation from an efficiency perspective. Visual rotation is begun with the factors provided by the extraction process The possibility of rapid visual rotation from a terminal on a time-sharing computer means visual rotation is now feasible, and questions of the nature and replicability of intuitively compelling procedures. This chapter also discusses the confactor rotations that are definitely different from simple structure. It describes the use of the new vectors in rotation to oblique simple structure. The chapter concludes with a technique, extension analysis, which allows factor loadings to be calculated for variables that were not included in the factor analysis.
