VDDS Case presentation You are here:HomeOur ServicesDepartments and ServicesVVictorian Dual Disability ServiceVDDS Training The VDDS will present a case that illustrates some of the difficulties in the assessment and management of people with intellectual disability. which can contribute to challenging behaviour. There is also a significant overlap with other mental and behavioural disorders. This webinar will provide an overview of the biomedical and psychosocial interventions and explores the evidence base for some of the more commonly used interventions (participants should have a basic understanding of autism to get the most out of this webinar).