Table 1.

Description of examined groups.

SRTT type	Limited response time			Unlimited response time			Main effect for the SRTT variant		Main effect for the group
Groups	SZ	BD	HC	SZ	BD	HC	F(1, 181) or F(1, 122)†	Effect size	F(2, 181) or F(1, 122)†	Effect size
Age [mean (SD)]	40.57 (12.38)	38.3 (11.88)	39.73 (11.63)	36.39 (11.96)	42.45 (13.57)	38.03 (11.09)	0.104	< 0.001	0.426	0.005
Sex (men/women)§	12/18	18/12	16/14	16/17	23/10	16/15	–	–	–	–
Years of education [mean (SD)]	15.3 (2.67)	16.27 (2.68)	15.33 (2.12)	14.48 (2.58)	15.15 (2.55)	16.13 (1.8)	1.103	0.006	2.231	0.026
Duration of treatment	10.47 (6.75)	8.2 (6.98)		10.27 (7.89)	11.38 (7.4)		1.318	0.011	0.199	0.002
Equivalent of olanzapine daily dosage [mean mg/day, (SD)]				14.23 (5.24)	10.37 (6.32)
BD type (I/II)#	–	13/17	–	–	15/18	–	–	–	–	–
Equivalent of olanzapine daily dosage [mg/day, (SD)]				14.23 (5.24)	10.37 (6.32)

SRTT, serial reaction time task; SZ, schizophrenia; BD, bipolar disorder; HCs, healthy controls; SD, standard deviation. Effect size (generalized eta squared) lower than 0.01 was counted as negligible, 0.01–0.06 as small, 0.06–0.14 as medium, and higher than 0.14 as large.

${}^{\text{\#}}{\chi }_{(2,63)}^2$ = 0.0286, p = 0.87.

^§χ² comparisons of gender distribution among following groups: limited response time groups ${\chi }_{(2,90)}^2$ =2.49, p = 0.28, unlimited response time group ${\chi }_{(2,97)}^2$ = 3.5, p = 0.173; unlimited and limited response time groups combined, ${\chi }_{(2,187)}^2$ = 5.39, p = 0.06.

^†F(1, 181) and F(2, 181) refers to comparison of SZ, BD, and HC groups, while F(1, 122) applies to the analysis of BD and SZ groups.