Autism Research and Treatment asymmetry after stroke. Their results also showed that the indices were similar in discriminative ability, but diﬀered in terms of interpretability. Therefore, symmetry indices, such as ratios, may be preferable for their ease of interpretation. Symmetry measures can be a useful measure of inter- limb coordination and help identify gait compensations. A limitation of indices is that the results do not provide an indication of abnormality. That is, the left and right limb could be equivalently abnormal and therefore symmetrical. However, results of tests for mean diﬀerences in temporal- spatial data between groups were not signiﬁcant. Therefore, it would appear that children with autism have normative temporal-spatial data for the left and right legs. 5. Conclusions No previous studies have examined gait symmetry using motion capture in older children with autism. 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