By the end of the course, participants should be able to: 1) Understand diagnostic criteria and identify symptoms of Intellectual Disability (ID), Autism Spectrum Disorder (ASD) and Attention Deficit Hyperactivity Disorder (ADHD). 2) Understand risk factors, comorbidities, and developmental course of neurodevelopmental disorders. 3) Consider client, family, and organisational factors in formulation and treatment planning under the supervision of a trained psychologist. 4) Understand intervention and behavioural change theories and frameworks, in particular: Functional Behaviour Analysis (FBA), Positive Behaviour Support (PBS), and Active Support (AS). 5) Develop care plans that appropriately consider client/family goals, formulation, and strategies for early intervention, crisis management and long-term follow-up, under the supervision of a trained psychologist. 6) Understand and apply common evidence-based interventions and environmental modifications, under the supervision of a trained psychologist, specifically in Positive Behaviour Support. 7) Understand local services for special needs across the lifespan and referral processes. 8) Work collaboratively in a multidisciplinary practice with speech and language therapist (SLT), occupational therapist (OT), and physiotherapist (PT). 9) Establish positive working relationships and managing disagreements in a professional relationship.