David Hamill, M.A., TSA
Director, Organizational Assessment Services
David has over 15 years of both public and private sector experience in personnel assessment, selection, performance management, and strategic workforce planning.  David is currently the Director of the Organizational Assessment Services at the Transportation Security Administration (TSA) and manages the division responsible for developing and implementing personnel assessments, conducting organizational surveys, managing the workforce analytics functions, developing engagement action plans, and managing TSA’s competency model. David is a past President of PTC/MW, the International Personnel Assessment Council (IPAC), and the Mid-Atlantic Personnel Assessment Consortium (MAPAC).

Ryan O’Leary, Ph.D., PDRI
Manager, Human Capital Consulting
Dr. O’Leary has extensive experience directing, developing, implementing, and evaluating human capital systems in a variety of public sector organizations. His experience includes job analysis and competency modeling, job classification and occupational analysis, leadership development and assessment, survey development, implementation, and analysis, development of career paths, development and validation of multiple personnel selection assessments, human capital system evaluation, workforce analysis, adverse impact and diversity analyses, development and validation of minimum/basic job qualifications, performance management, training and development, certification, and employment litigation support.  He currently leads a team of consultants developing selection and other human capital programs for public and private sector organizations. Dr. O’Leary’s work has been recognized by the International Personnel Assessment Council and the Society for Industrial and Organizational Psychology and he was named a 2011 Game Changer by Workforce Magazine.  He received his Bachelor’s degree in psychology from Emory University and his Doctorate degree in industrial and organizational psychology from Auburn University.

Kathy Stewart, M.A., U.S. Customs & Border Protection
Personnel Research Psychologist
Kathy Stewart is a Personnel Research Psychologist at U.S. Customs and Border Protection (CBP).  At CBP, she develops a variety of assessments for positions within the agency, including structured interviews, in baskets, reasoning tests, and oral presentations.  She is a member of the American Psychological Association (APA), the Society for Industrial/Organizational Psychology (SIOP), the International Personnel Assessment Council (IPAC), and the Personnel Testing Council of the Metropolitan Washington area (PTC/MW).  Ms. Stewart served as the Membership Chair (2010-2012) and is currently serving as the Secretary for PTC/MW.  She received her M.A. in I/O Psychology in 2008 from George Mason University.

Chad Peddie, M.A., HumRRO
Research Associate, Personnel Selection & Development
Chad Peddie is a Research Associate in the Personnel Selection and Development Program of the Human Resources Research Organization (HumRRO). While at HumRRO, Chad has served in both contributing and leadership roles including task lead, project director, committee chair and lead author.  He has a B.S. in Psychology and an M.A. in Industrial-Organizational Psychology from George Mason University. He has conducted both applied and academic research in personnel selection, organizational diversity, training, occupational health psychology, and organizational climates. He has published his work in technical reports, book chapters, and peer-reviewed journals including Academy of Management Journal, Journal of Management, and Journal of Applied Social Psychology. Additionally, he has presented findings at several national conferences (i.e. SIOP, APA, and Academy of Management).