Table 3.

Convergent validity

	BNSS total	BNSS motivation/pleasure	BNSS diminished expression	BNSS anhedonia
PANSS negative factor	0.89**	0.71**	0.90**
SANS avolition/apathy	0.63**	0.65**	0.47**	0.43**
SANS asociality/anhedonia	0.77**	0.80**	0.57**	0.58**
SANS blunted affect	0,82**	0.56**	0.91**
SANS alogia	0.63**	0.37**	0.77**
SANS total	0.89**	0.73**	0.87**
AES total (n = 48)	-0.48**	-0.50**	-0.40**
GAF	-0.69**	-0.68**	-0.56**
PSP total	-0.73**	-0.73**	-0.57**
	TEPS anticipatory	TEPS consummatory
BNSS intensity of pleasure	-0.25*	-0.29*
BNSS intensity of future pleasure	-0.26*	-0.20
BNSS anhedonia subscale	-0.31*	-0.36*
SANS asociality/anhedonia	-0.13	-0.15

Note. *p < 0.05; **p < 0.01