Table 2. Descriptive statistics in the ASD and TD groups for all variables of interest (First rating, Difference score for the control drawing and Difference score for the experimental drawing).

		median (min – max)	mean ± sd	95% confidence
ASD	First Ratings	4.15 (3.00–5.10)	4.06±0.64	3.74–4.38
	Diff. Score Control	0.00 (−1.00–1.00)	−0.17±0.62	−0.47–0.14
	Diff. Score Experimental	0.00 (−3.00–3.00)	0.11±1.71	−0.74–0.96
TD	First Ratings	3.90 (−2.90–4.50)	3.77±0.53	3.50–4.03
	Diff. Score Control	0.00 (−2.00–2.00)	0.03±1.09	−0.51–0.57
	Diff. Score Experimental	1.00 (0.00–2.00)	1.00±0.66	0.67–1.33