Table 1

Mean (SD) [range] demographic data of subject groups

	Sex (M/F)	Age (y)	Education (y)	VIQ - WAIS R	Mattis
Subject group:
First degree relatives	23/18	38.41 (13.82) [20–69]	12.66 (3.21) [7–18]	105.78 (14.59) [85–150]	141.41 (2.30) [136–144]
Healthy controls	17/22	44.44 (16.51) [20–73]	12.10 (3.52) [7–18]	109.30 (15.12) [85–150]	141.90 (1.87) [138–144]