what is the pca on a pca why use pca can pca test cfa how many factors to scale pca reliability what is the pca of pca what is loading of factor in pca does pca work on efa is pca sufficient pca definition for efa when to use pca do efa use pca in spss what factors does pca scale use what is the pca in spss used for why is pca used for efa is pca sufficient how to calculate pca scale can pca scale be analyzed? what is the difference between a two factor scale, an efa scale and a cfa scale? pca if an age factor is loaded at a higher than a gender factor, is the pca sufficient