Fig. 3

Force Variability in Newtons (N). Age (years; log₁₀ scale) associations with force standard deviation in Newtons (N; log₁₀ scale) for (A) the autism (ASD; red circles) and (B) neurotypical control (NT; blue triangles) groups. The regression lines represent the significant group x age effects (across conditions), though data for visually guided (Vis; solid points) and memory guided (Mem; empty points) are also shown. (C) Force variability depicted as a function of group (NT: blue triangles; ASD: red circles) during visually guided (Vis; filled points) and memory guided (Mem; empty points) precision gripping. The large points represent group x condition marginal means adjusted for random intercepts of subject in the LMER models. The * represents the significant group main effect. Error bands (A, B) and bars (C) represent the 95% confidence intervals from the MLM models after accounting for random intercepts of participant