To assess for the possibility that rTMS treatment may result in cognitive side effects, we will assess cognition at baseline and the end of 4 weeks of treatment with the following tests. They may also provide evidence of improved executive / frontal functioning produced with the treatment: Personal Memory Questionnaire, Block Design Test, Verbal Paired Associates Recall and Recognition, Visual Paired Associates, Digit Span (WAIS), Simple and Complex Reaction Time, Finger Tapping Test, Verbal Fluency, Trail making A&B.