• David Wedaman, Ph.D.

    Dr. David Wedaman is an organizational psychologist, developmental coach, and teacher, with backgrounds in higher education, nonprofit administration, and innovative leadership development. His interests include adult development, adaptive change, assessment, collaboration, learning, innovation, decision making, leadership development, systems thinking, and emergent processes.

    David is an adjunct faculty member in the Organizational and Leadership Psychology Department at William James College. He is certified in Immunity to Change and Lectica adult developmental programs and co-teaches Lectica adult development assessment courses. Recently he has coached at Harvard Business School Executive Education, created an innovative leadership development platform for emerging Food Bank leaders, developed a cutting-edge assessment of organizational health for software development communities, and helped resolve interpersonal and structural conflicts in organizational transitions in library and IT contexts.

  • Brandi Derr, Psy.D., M.Ed.

    Brandi currently serves as the Director of the Organizational Leadership Psychology Doctoral program for William James College. She also has an extensive background in Human Resources. Brandi previously served as Director of Strategic Planning for LGBTQ Boston Senior Housing Inc.; Director of Community Partnerships and Outreach for the Institute for Black and African American Mental Health; and Director of Programs for Rogerson Communities, Adult Day Health Programs.

  • Terrence Williams, Psy.D., MSM

    Terrence is an organizational and leadership psychologist and consultant. He draws from his many years of executive experience leading meaningful organizational change in both public and private sectors for organizations like the New York Times, Disney, and the ACLU as a Vice President of Human Resources and various other roles in HR and functional operations. He's also served as an adjunct professor, executive coach and mentor. He holds a doctorate in organizational leadership psychology, concentrating on group dynamics. He also holds a master of science in management degree.

  • Rachel Slayton, M.A.

    Rachel is an organizational development consultant and HR practitioner. She specializes in talent strategy consulting, recruiting, and project management. Rachel has worked with a diverse range of organizations including early-stage startups, non-profits, and higher education institutions. She holds a B.A. in Psychology and Anthropology from Brandeis University and a M.A. in Organizational Psychology from William James College.

    Rachel's interests include: Leadership Development, Employee Engagement, Talent Management, Change Management, Group Dynamics, Inclusive Leadership, Psychological Safety, Multi-generational Workplaces, and Early-career Manager development