. Author manuscript; available in PMC: 2012 Apr 4.

Published in final edited form as: Prog Neuropsychopharmacol Biol Psychiatry. 2011 Jan 6;35(4):939–943. doi: 10.1016/j.pnpbp.2011.01.001

Table 1. Subject Demographics.

Sample Characteristic	Healthy Comparison Subjects (N = 48)		Schizophrenia Spectrum Disorders (N = 52)


Sex (M, F)	30	18	29	23
Mean Age (years, SD)	16.38	2.91	16.02	2.15
Handedness (dextral, nondextral)^a	44	4	48	4
Parental social class (high, low)^b	45	1	42	8
Race (Caucasian, Non-caucasian)	13	35	23	29

The patient group had 1 ambidextrous person

Hollingshead Redlich Score (Hollingshead and Redlich, 1958) where 1 = highest and 5 = lowest are dichotomized into High (1, 2, 3) and Low (4, 5)