Brief Report: Repetitive Behaviour Profiles in Williams syndrome: Cross Syndrome Comparisons with Prader-Willi and Down syndromes.

Cohen et al. (2018) sent a survey to parents of adults with Williams, Prader-Willi, or Down syndrome.

Parents checked boxes on the Repetitive Behaviour Questionnaire. The team then lined up the three profiles to see where they differed.

All three groups showed almost the same repetitive behavior pattern.

Williams syndrome had only tiny bumps: a bit more body rocking and hoarding. Otherwise the profiles sat on top of each other.

South et al. (2005) used the same survey tool on kids with Asperger and high-functioning autism. They also found no big split between groups, showing the questionnaire can pick up fine shades but not wide gaps.

Mukherjee et al. (2015) argue that precise behavioral maps like this one are the bridge that lets future gene studies turn into real help for families.

Koller et al. (2022) looked at repetitive behaviors in autistic children and linked parent accommodation to later problem behavior. Their focus is changeable parent actions, while R et al. paint a fixed picture; the two views sit side-by-side, not in conflict.

If you assess adults with genetic syndromes, expect similar repetitive topographies. Spend your energy on supports for daily living, not on hunting for big syndrome-only quirks. Track small differences like hoarding only when they create safety issues.