The purpose of this study was to compare age equivalent values obtained from the PPVT and PPVT-R. The 80 subjects, ages 3:6 to 4:6 years old, were presented one form each of the original and revised forms of the test. Results indicate the subjects achieved age equivalent scores significantly closer to their chronological ages on the PPVT-R.

There are a number of people whose invaluable help made completion of this thesis possible. First, my thanks and appreciation to Joan McMahon, whose support, enthusiasm and editing suggestions kept me going even during the darkest days. And .to Dr. Robert Casteel, whose input early in the development of this study and participation on my committee are greatly appreciated. I am very grateful to Dr. Ted Grove for his valuable time spent assisting with the statistics and for making the computer less mysterious. Additional thanks to my fellow graduate students and cosufferers of thesis insanity-Mel, Doug, Kathy, Jean and Michelle, for sharing their ideas and problems, both of which helped me. Special thanks to ~arb for unselfishly sharing ideas a•nd suggestions not only for the thesis, but throughout graduate school. And to Susan, without whose sense of humor during this whole saga I would truly be insane. My family has put up with an incredible amount of unintentional neglect while I completed this and I owe them a great deal of love and thanks-Mom, joy, Carrie, Jon, Jeff, Anne and Dad. And finally to Patrick, for his love, hugs, making dinner, constant support and saint-like patience with a woman who daily grew more impossible to live with. It is to him that I dedicate this work.