Table 1.

Descriptive statistics.

Tasks and measures	Mean	Std. dev.	Min	Max	Skew	Kurtosis
Free drawing
Visual control	2.71	0.51	1	3	−1.50	1.37
Form	1.97	0.66	0	3	−0.25	0.15
Meaning	1.00	0.84	0	2	0.00	1.58
Drawing completions
Identifications	2.49	1.95	0	8	0.87	0.54
Correct placement	4.51	2.22	0	10	−0.09	−0.28
Appropriate marks	3.88	2.35	0	10	0.12	−0.55
Diffuse scribblings	0.95	1.12	0	3	0.79	−0.80
Human figure drawing
Structure and body parts	0.62	1.45	0	6	2.45	5.19
language test (TPL)
Receptive vocabulary	17.88	2.52	5	20	−2.66	9.61
Expressive vocabulary	12.81	5.09	0	20	−1.49	1.45
Receptive syntax	14.76	5.23	0	20	−1.80	2.43
Expressive syntax	29.08	19.16	0	58	−0.36	−1.30
Working memory tasks
Imitation sorting task (IST)	3.46	1.63	1	8	1.31	1.39
MSSP, easy condition	3.86	1.69	0	8	−0.02	−0.49
MSSP, difficult condition	2.19	1.43	0	6	0.33	−0.21
Inhibition tasks
Circle tracing	0.12	0.28	−0.50	0.85	−0.10	−0.39
Shape stroop	1.69	1.12	0	3	−0.21	−1.33
Tower building	3.77	3.36	0	10	0.51	−1.10
Shifting task
Reverse categorization	9.09	3.51	0	12	−0.98	−0.11