Eyes Test
The analysis of covariance revealed that euthymic patients performed significantly worse on the Eyes test compared with controls (F1,39= 4.29; p< 0.05; see fig. 2). The effect of the covariate (IQ) was not significant (F1,39= 1.43; p= 0.238). Given that in BD, low IQ in euthymic patients has been reliably shown [8], removing variance associated with IQ might be removing meaningful variance associated with the illness-related deficit under investigation. Therefore, we also conducted these analyses without IQ as a covariate; results showed that differences between the groups remained significant (F1,40= 9.06; p= 0.004).