Table 2. Studies 1 and 2: Do Personality Traits Predict Within-Group Variability in Autism Symptom Severity?

Big Five dimension	Study 1	Study 2
	Clinician-reported ADOS-G	Clinician-reported ADOS-G	Parent-reported SCQ
			ASD	TD
Extraversion
Self-report	−.01	−.12	−.01	−.19
Parent report	--	−.03	−.14	−.23
Agreeableness
Self-report	.21	−.07	.13	.10
Parent report	--	−.02	−.02	−.03
Conscientiousness
Self-report	.22	−.04	.12	.11
Parent report	--	−.16	−.23	−.13
Neuroticism
Self-report	−.37*	.17	.05	.07
Parent report	--	.13	.35*	−.03
Openness
Self-report	−.20	−.16	.06	−.04
Parent report	--	−.09	−.36*	−.33*

Note. n = 37 for ASD adult self-report (Study 1); n = 50 for ASD and 50 for TD for child self-report, and n = 50 for ASD and 49 for TD for parent report (Study 2). ASD = Autism Spectrum Disorder; TD = Typically Developing. ADOS-G = Autism Diagnostic Observation Schedule-Generic (Lord et al., 2000); SCQ = Social Communication Questionnaire (Rutter et al., 2003).

^*p < .05;

^**p < .01.