Joey Lim

Joey moved from Malaysia to Adelaide in 2008 to further her studies in this area. She holds a Bachelor of Psychological Science from the University of Adelaide and Bachelor of Arts (Honours), majoring in Psychology, from Flinders University. She is currently the only Board Certified Assistant Behavior Analyst (BCaBA) in South Australia.  Joey specialises in early intensive behavioural intervention based on the science of ABA for children on the autism spectrum. Her work includes conducting VB-MAPP assessments, developing behaviour intervention plans, implementing individualised programs, and making decisions based on data to ensure her clients are learning new skills as fast as possible.


Eric Messick

Dr Eric Messick has been working in the areas of psychology, behaviour, and education for over 15 years. He has worked as a lecturer, teaching fellow, clinical leader, supervisor, senior psychologist, consultant, programme director and in other roles. He's held volunteer governance roles, has participated in several sporting teams and team endeavours, presented many presentations at local and international conferences, and has a broad range of experience from working with a variety of people with various struggles in New Zealand, Australia and the USA. Eric runs our Registered Behaviour Technician (RBT) training programme ensuring our therapists are well trained, and therefore their therapy is of a high quality. Our therapists are amongst the handful in Australia to receive this credential. See for more details.


Susan Petrie

 Susan moved to Adelaide from New Zealand in 2011 with her husband. She has been working in the field of applied behaviour analysis and autism for over 13 years She has worked as a senior therapist, psychologist, social skills group facilitator, guest lecturer, consultant, clinical director, volunteer board member for organisations both in NZ and in Australia, and now director of Beanstalk Child Psychology. Susan is a Psychologist and a Board Certified Behaviour Analyst who specialises in children on the Autism Spectrum.
  Susan is passionate about providing a high standard of therapy to her clients. She is pleased to be the first provider in South Australia to offer the Registered Behaviour Technician (RBT) credential to students wishing to pursue a career in behaviour analysis. Susan ensures all her clinical staff are part of a constant and never-ending improvement training program. 


Tessa Taylor
 Dr. Tessa Taylor has been working with individuals with developmental disabilities since 1999 and is a Board Certified Behaviour Analyst (BCBA-D). She obtained her Master’s degree in 2001 and her PhD in Clinical Psychology (with specialisation in Developmental Disabilities) in 2010 in Louisiana. Tessa completed her predoctoral internship and postdoctoral fellowship at the world-renowned Johns Hopkins University School of Medicine/Kennedy Krieger Institute where she remained on as faculty in the Pediatric Feeding Disorders Unit which is the original, largest, and one of the only interdisciplinary behavior analytic programs of its kind. Tessa has highly specialised and unique training in pediatric feeding disorders (e.g., tube dependence, liquid dependence, food refusal, food/texture selectivity, inappropriate mealtime behavior) and severe problem behavior (e.g., aggression, self-injury, pica). She has authored over 35 peer-reviewed research publications and 2 book chapters, and has over 35 professional presentations and posters. She serves as the Consortium Initiative Coordinator for the Association for Behavior Analysis International’s Pediatric Feeding Disorders Special Interest Group.