Fig. 4

Violin plots for continuous demographic variables in final matched groups. Points represent observations per participant. For age and nonverbal IQ, matching was achieved according to criteria of p > .5, Cohen’s d close to 0, and variance ratios close to 1. CELF-4 Word Associations did not meet the criteria of p > .5, but distributions on this variable appear similar between groups. Groups are significantly different on other language measures of CELF-4 Recalling Sentences and Word Classes, as well as the Social Communication Questionnaire (SCQ) and the Vineland (VABS-II) Socialization Domain