Fig. 2

MSEL Verbal Developmental Quotient Score Trajectory by Group and Timepoint. Model-generated differential trajectories of derived Verbal Developmental Quotient (VDQ) from the MSEL by group and timepoint (Visit). The FXS group exhibited significantly delayed trajectories of VDQ from 6–24 months compared to controls. By 12 months of age a pattern emerged between groups (Table 3) that persisted through 24 months, such that control > FH-nonASD > FH-ASD > FXS