“…For example, the Vineland Adaptive Behaviour Scales (Sparrow, Balla, & Cicchetti, 1984) can be used from 0 to 18 years, but poor inter‐rater reliability limits its use in tracking progress over time if different people complete the assessment (Voelker, Shore, Hakim‐Larson, & Bruner, 1997). Functional assessment tools are now being developed with a focus on support needs (Soo, Tate, Williams, Waddingham, & Waugh, 2008) and using naturalistic tasks to enable systematic observation of skills (Chevignard et al, 2009).…”