. Author manuscript; available in PMC: 2023 Nov 1.

Published in final edited form as: Biol Psychiatry Cogn Neurosci Neuroimaging. 2022 Apr 14;7(11):1149–1157. doi: 10.1016/j.bpsc.2022.03.013

Table 1.

Participant Demographics

Characteristics	Healthy Control Participants, n = 44	Participants With Schizophrenia, n = 42	Statistic
Age, Years, Mean (SD)	30.1 (8.0)	27.4 (10.2)	t₈₄ = 1.83, p = .07
Gender, F/M, n	17/27	11/31	χ²₁ = 1.5, p = .22
Race, Black/Other/White, n	9/5/30	12/3/27	χ²₃ = 1.0, p = .59
Personal Education^a, Years, Mean (SD)	17.1 (2.3)	14.6 (2.4)	t₈₄ = 5.0, p < .001
Parental Education, Years, Mean (SD)	14.7 (2.3)	14.6 (2.8)	t₈₄ = 0.24, p = .81
Premorbid IQ^a, Mean (SD)	114 (7.7)	105 (13.2)	t₈₄ = 4.0, p < .001
Green et al. Paranoid Thoughts Scale-b, Mean (SD)	1.6 (2.7)	1.7 (3.8)	t₈₄ = −0.04, p = .97
PANSS Positive, Mean (SD)	–	13.1 (4.1)	–
PANSS Negative, Mean (SD)	–	13.8 (6.2)	–
PANSS General, Mean (SD)	–	25.5 (5.2)	–

Premorbid IQ was measured using the Wechsler Test of Adult Reading.

F, female; M, male; PANSS, Positive and Negative Syndrome Scale.

p < .05.