Experiment with our Marsh SDQ data set (or another large data set you have available). Using the results of the EFA from the entire sample, draw small random samples that represent the following subject to item ratios. Explore the effect of having an inappropriately small sample on the goodness of the solution. Do the results of the small samples replicate the results from the large sample “population”?

Review EFA analyses in top journals in your field. What subject to item ratios do you find in these articles? Are they sufficient, given the results from this chapter and your experiments in #1?