Convinced that mental performance services should be measurable, reliable, linked to performance outcomes, and grounded in a well-proven applied-research model, Drs. Harry van der Lei and Domagoj Lausic co-founded HPI in 2011 to provide services to athletes, coaches, and parents not only in the Atlanta area, but nationally and internationally.

Built on more than 40 years of evidence-based research in the fields of educational psychology and learning systems, neuro-physiology, and sport psychology as well as extensive applied work experience with Winter Olympic gold winning individuals and teams, world champions, and amateurs, HPI represents a unique collaboration of experts in mental assessment and training services.


Harry van der Lei

Harry van der Lei was born in Groningen, Holland. He graduated in 1989 from the College of Physical Therapy in Holland and moved to the United States where he specialized in Sports Rehabilitation...

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Domagoj Laušić

Domagoj Lausic was born in Zagreb, Croatia. He earned a Ph.D. in Sport Psychology from Florida State University. His research interests include team communication, development of expertise, periodization, and biofeedback...

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Board of expertise members

Gershon Tenenbaum, Ph.D.

Gershon Tenenbaum is Benjamin S. Bloom Professor of Educational and Sport Psychology at Florida State University and the Sport Psychology graduate program director. He is a graduate of Tel-Aviv University and the University of Chicago in...

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Keith Henschen, Ph.D.

Keith was a Professor in the Department of Exercise and Sport Science at the University of Utah for 39 years (1971-2010) with an area of expertise in the psychosocial aspects of sports. Keith received his P.E.D. degree from Indiana University and has been...

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Members of HPI are based in the USA and are associated with numerous professional and sport organizations: United States Tennis Association (USTA), Association for Applied Sport Psychology (AASP), Florida State University (FSU Men’s and Women’s Golf program), and certified by Biofeedback Certification for International Alliance (BCIA), and major tennis teaching organizations (Professional Tennis Registry, United States Professional Tennis Association).

Featured Articles

Check out Our Latest Articles

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A Change in Behavior Starts with...

Players’ ability and inability to change certain behaviors is truly fascinating. Researchers Prochaska and DiClemente studied how people change addictive and health behaviors.

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Stolen Games

A stolen game is a game in which both players have a winning opportunity. It has a minimum of eight points, unless a no-ad scoring system is used.

HPI court with HPI logo

Individual arousal-related performance zones effect on...

This study sought to examine changes in routine consistency with respect to optimal and nonoptimal arousal states. Idiosyncratic differences in routine patterns, both behaviorally and temporally were evident.

HPI court with HPI logo

Intrateam Communication and Performance in Doubles...

Verbal and nonverbal communication is a critical mediator of performance in team sports and yet there is little extant research in sports that involves direct measures of communication.


“Dr. van der Lei’s dedication to providing the best applied research based mental performance assessment and training services for golfers built upon objective and reliable measures, his utilization of the latest technology available, and his contribution as a team player within our men’s and women’s golf programs in supporting our golfers in their sport and daily life, are highly appreciated and we are looking forward to collaborating with Harry for many years to come!”

Trey Jones - Head men’s coach and Director of Golf for the men’s and women’s golf programs at Florida State University

“Dr. Lausic has a unique approach which is head and shoulders above the countless other sports psychologists I have worked with in my forty-year career as a player, coach, manager and mentor.”

Rodney Harmon - Head Coach Women's Tennis, Georgia Institute of Technology

“Dr. Lausic worked extensively with my women's tennis program at Clemson University where I saw his work increase the performance level of our student athletes over a period of just a few months...I saw an amazing sense of resiliency begin to take place in each athlete coinciding with increased confidence and trust in one's own ability.”

Nancy Harris - Head Coach Women's Tennis, ret., Clemson University

“After only a few routine training sessions, I achieved my best results for the year of 2012. The positive changes in my golf game were unreal. Since then, I have started to understand the importance of the Hourglass Performance Model and of specific breathing techniques for better results on and off the course.”

Macarena Silva - Professional golfer, winner of the 2006 Matchplay de Chile and the 2010 Copa de los Andes as an amateur. Macarena turned professional in June 2011 and currently resides in her hometown Santiago, Chile.

Harry’s expertise in mental performance has helped me greatly in controlling my emotions and being able to relax and focus before and during my competitive races.

Chad Hedrick - Long Track Speedskating, 2006 Olympic Bronze, Silver, and Gold Medalist.