Adaptive behaviour is crucial for well-being and independence. The Adaptive Behaviour Assessment System (ABAS-3) is often used to plan individualised support in specialist educational settings, drawing on both teacher and parent informants. In practice, however, little is known about the extent of variation between informants. We examined…

Functional behavior assessment (FBA) is an integral component of treatment development for students with intellectual and developmental disabilities. The continuum of FBA methods includes indirect, direct, and functional analysis assessment methods. However, there is not a standard for the best approach to the FBA process. This evaluation compared…