1. Erin D. Bigler, PhD, is a professor of psychology at Brigham Young University and holds a diplomate in clinical neuropsychology from the American Board of Professional Psychology. He is a past president of the national Academy of Neuropsychology. Address: Erin D. Bigler, Brigham Young University, Psychology Dept., 1086 Kimball Tower, Provo, UT 84602.