Duncan is an Associate Professor of Sport Psychology & Coaching at Edinburgh Napier University. He is a Chartered Psychologist with 20 years of experience working with elite sports officials. His research has focused on developing decision making under pressure and game management in match officials. He has provided psychological support to the Rugby Football Union Elite Referee Unit and has worked with a wide variety of match officials including the Rugby Football League Match Officials, New Zealand Netball, SRU High Performance Referees, Scottish Basketball and the ECB Association of Cricket Officials. He completed a post-doc research project with New Zealand Soccer referees investigating the effect of physical performance upon decision-making. Duncan is a former video producer and uses his expertise in video production and editing to develop online learning materials for coaches & sports officials.