Table 1.

Participant Characteristics Study 1–3.

Study 1	ASD (N = 27)	TD (N = 40)
Gender M/F	21/6	22/18
Chronological Age (months) M (SD; Range	59.3 (18.3; 28–96)	34.5 (12.3; 14–63)
Developmental Age (months) M (SD; Range)	32.0 (10.5; 12–50)
Cognitive Score M (SD; Range)	62.7 (24.5; 29–106)
Vineland Adaptive Behavior Scales
Adaptive Behavior Composite M (SD; Range)	65.6 (9.7; 51–84)
Communication M (SD; Range)	70.4 (15.9; 42–104)
Daily Living Skills M (SD; Range)	66.8 (13.2; 48–95)
Socialization M (SD; Range)	65.3 (10.1; 51–86)
Motor Skills M (SD; Range)	73.9 (12.0); 54–97)
Childhood Autism Rating Scale (raw score)	36.6 (7.1; 19.5–49)
Study 2	ASD (N = 19)	TD (N = 21)
Gender M/F	15/4	11/10
Chronological Age (months) M (SD; Range)	58.2 (21.1; 26–96)	33.6 (12.9; 17–63)
Developmental Age (months) M (SD; Range)	29.9 (10.4; 12–50)
Cognitive Score M (SD; Range)	58.2 (21.6; 29–101)
Vineland Adaptive Behavior Scales
Adaptive Behavior Composite M (SD; Range)	65.7 (9.8; 51–85)
Communication M (SD; Range)	68.4 (13.5; 50–97)
Daily Living Skills M (SD; Range)	67.6 (13.3; 48–95)
Socialization M (SD; Range)	65.7 (10.7; 53–90)
Motor Skills M (SD; Range)	72.3 (10.6; 54–97)
Childhood Autism Rating Scale (raw score)	37.1 (7.1; 19.5–49)
Study 3	ASD (N = 17)	TD (N = 23)
Gender M/F	12/5	10/13
Chronological Age (months) M (SD; Range)	69.6 (17.0; 44–92)	34.9 (10.3; 17–60)
Developmental Age (months) M (SD; Range)	32.2 (10.8; 12–50)
Cognitive Score M (SD; Range)	56.8 (23.7; 29–101)
Vineland Adaptive Behavior Scales
Adaptive Behavior Composite M (SD; Range)	62.5 (9.3; 51–83)
Communication M (SD; Range)	67.4 (14.8; 50–104)
Daily Living Skills M (SD; Range)	64.9 (14.2; 48–95)
Socialization M (SD; Range)	62.9 (10.3; 51–86)
Motor Skills M (SD; Range)	69.8 (11.5; 54–91)
Childhood Autism Rating Scale (raw score)	38.0 (7.9; 19.5–49)