Kristen Klassen, PhD, is a facilitator, trainer, and therapist who believes that play is at the core of all that we do, and uses it to help others learn, grow, think, and be different.

Alec Hamilton, PhD, has been a practising psychologist with people of all ages for over 30 years, utilising positivity, joy and playfulness to guide his clients and colleagues on their change journey.

Mary Anne Peabody, EdD, LCSW, RPT-S, is an associate professor at the University of Southern Maine and has published on adapting LEGO® Serious Play® in higher education, play therapy, and clinical supervision.