Reduced Hand Specialization and Idiosyncratic Visuomotor Strategies in Autism During Naturalistic Object Manipulation.

The study did not test an intervention, so it cannot show whether a treatment would improve hand use or daily function. Only 27 autistic and 27 non-autistic adults were analyzed, and the groups were compared at one time point. All participants had to be right-handed by writing preference, and five left-handed participants were excluded, so the results may not apply to autistic adults who use both hands or prefer the left hand. Raters knew group membership while coding videos, which could bias hand-use counts. The paper reports multiple outcomes and does not identify one as primary. Block availability was not perfectly balanced for every piece type, so some reaches may have been limited by where required blocks were placed. Race, ethnicity, income, education, and socioeconomic status were not recorded, so contextual factors may have influenced movement patterns. The sample was limited to adults, so it does not show how these patterns develop in children.

The authors declared no conflicts of interest. Funding came from NSERC, the Canada First Research Excellence Fund, the York Research Chair Program, the Israel Science Foundation, and the United States-Israel Binational Science Foundation. AI tools assisted with code drafting and grammar, and the authors reviewed the outputs.

Do not read these findings as proof that autism causes motor impairment or that therapists should train right-hand use. The study compared groups on a LEGO task and found differences, but it did not test an intervention or show whether the movement patterns are deficits or adaptive strategies.