Additional file 1: of Reduced engagement with social stimuli in 6-month-old infants with later autism spectrum disorder: a longitudinal prospective study of infants at high familial risk

Table S1. Descriptive and demographic information for participants included in the full sample. Table S2. Summary of participant providing data for the habituation task. Table S3. Summary of number of participants providing data for the event-related potential task. Table S4. Summary of habituation variables by Age, Risk Group, Outcome Group and Stimulus. Table S5. Summary of ERP variables by Age, Risk Group, Outcome Group, and Condition. Figures are Mean (Standard Deviation). Table S6. Summary of habituation and clinical variables by Cluster of infants. Figure S1. Location of electrodes used in the analysis for the P400 (left) and Nc (right) components. Figure S2. Nc (A) and P400 (B) ERP components for the normative sample in Experiment 1. Figure S3. Three dimensional scatter plot showing the three empirically identified clusters of infants