Assessment and Treatment of Complex PTSD and Dissociation in Autistic and ADHD Individuals: An Affirming and Integrative approach

Liam Spicer (he/him) is a Senior Lecturer in Psychology, Psychologist, EMDR Trainer & Consultant, and Accredited ISST Schema Therapist with lived experience of being neurodivergent as an Autistic ADHDer. He is the course co-ordinator for Cairnmillars Postgraduate Certificate in Trauma Informed Care, and delivers EMDR level one training for Psychology Training.

Liam has presented at both International and National conferences including in Europe, the United States, and Asia on the topics of EMDR, Schema Therapy, trauma, grief, Autism and ADHD and has delivered guest webinars and trainings for the EMDR Association of Australia, AAPi, Headspace, APS, and other organisations.

Liam has been a contributor to the Routledge International Handbook of Child and Adolescent Grief, has published in various academic journals including their paper with colleagues on Understanding Early Maladaptive Schemas in Autistic and ADHD individuals which has gained widespread international interest, and is currently apart of Australia’s first working group on developing clinical practice guidelines on MDMA-AP for PTSD. He is recipient of the 2026 International Society for Schema Therapy Research Grant, for a project on Unmet Core Needs, Adverse Childhood Experiences, Schemas and Schema Modes in Autistic and ADHD Adults.

As a psychologist, he has a special interest in working with trauma, dissociation and grief, and predominantly works with Autistic and ADHD adults through a neuroaffirming lens. He is the director of the Neurodiversity Affirming Therapy Conference Australia and is currently involved in several academic and research projects in this space.