Add to ORKGThe author would like to acknowledge the many individuals that contributed to the completion of this study. Special recognition goes to Dr. James L. Smith, the chairman of the committee, for his advice, guidance, patience and encouragement throughout the study. I would also like to thank Drs. M. M. Ayoub and William J. Kolarik for participating on the committee. Special thanks to the subjects who took part in the study; their motivation and enthusiasm was greatly appreciated. In addition, I would like to thank my parents, Donna and Jim Woods and Craig and Linda Druskins, for their continual support and encouragement. Finally, my most sincere appreciation goes to Matthew Bishop for his participation, reassurance and endless patience througho...