Table 1 Participant demographic and clinical characteristics, mean (SD). Group differences were tested using linear models (R function “lm”) for continuous variables and chi-square (χ²) with Yates’ continuity correction (R function “chisq.test”) for categorical variables

Age (years)

27.04 (7.39)

Range 21–49

28.19 (9.11)

Range 20–48

t(53)= .52

p = .61

Sex

25 male, 3 female

23 male, 4 female

χ² = .003

p = .96

Race

African American/Black = 3

Asian/Pacific Islander = 3

White = 22

African American/Black = 3

Asian/Pacific Islander = 3

White = 20

χ² = 1.14

p = .77

Full scale IQ

104 (20)

Range 72–140

112 (10)

Range 97–136

t(53) = 2.03

p = .05*

BAP-Q

3.64 (.70)

Range 2.19–5.03

2.44 (.52)

Range 1.47–3.47

t(53) = 7.25

p < .001**

ADOS-2 CSS

6.96 (2.05)

Range 2–10

1.19 (1.10)

Range 0–5

t(52) = 12.78, p < .001**