Table 2.

Between-Group Connectivity Results

	BPW vs HCS	BPP vs HCS	BPP vs BPW	SCZ vs HCS	SCZ vs BPW	SCZ vs BPP
Mean P value	< .001***	< .01**	< .001***	.07	< .001***	.18
Mean t value	3.93	3.09	5.54	1.85	5.42	1.36
Mean effect size (Cohen’s d)	0.80	−0.69	1.37	0.33	1.03	−0.30

Note: BPP, Bipolar patients with psychosis history; BPW, Bipolar patients without psychosis history; SCZ, schizophrenia patients; HCS, healthy control subjects. All statistics were calculated across all voxels for the identified cluster that survived the 1-way ANOVA F-test presented in figure 1. All Cohen’s d effect sizes were calculated across subjects, using standard procedures. ³⁶ Cohen’s d was obtained by extracting the average Fisher’s r-to-Z connectivity value for each subject across the entire identified cluster as in figure 1. This was done to characterize the magnitude of between-group effects across voxels surviving the whole brain correction and to provide a guide regarding sample sizes needed for future replications. Significant between-group effect at P < .05*, P < .01**, P < .001***.