Dr. Shepherd received a PhD in psychoacoustics from the University of Auckland, New Zealand, in 2005. Since this time he has attained the position of Senior Lecturer at the Auckland University of Technology, where he lectures in the Faculty of Health in addition to being an Honorary Research Fellow at the University of Auckland, where he has researched and taught in the Departments of Psychology, Chemistry, and Audiology.
Dr. Shepherd's research interests are broad, but mostly grounded in psychometric assessment and the application of psychophysics to the assessment and explanation of maladaptive psychological processes. Current projects include the relationship between psychosocial stressors, personality, and health; retronasal assessment of schizophrenia; autonomic imbalance and noise sensitivity; rapid audiometric testing; and quality of life testing. Shepherd has published peer reviewed book chapters and numerous scientific articles as well as spoken at numerous conferences.
Dr Shepherd has represented and consulted with a number of community groups faced with intrusive noise, and argues that noise in the community must be managed with care if it is not to become a health risk.