It depends on what you are doing. If these are going to be IVs in a least squares regression, no. If DVs it would be a good idea but it is only required of the model residuals. For other models, it depends on the assumptions. Best regards, D. Booth
Computed factor scores are standardized to a mean of zero; however, the standard deviation of the distribution of factor scores (by factor) will be 1 if principal components methods are used and will be the squared multiple correlation between factors and variables.