Table 1 Item analysis using independent t-test for the initial questionnaire of principled negotiation

Item	t	P>|t|	Item	t	P>|t|	Item	t	P>|t|	Item	t	P>|t|
PN01	-7.34	<.001	PN09	-11.81	<.001	PN17	-8.43	<.001	PN25	-9.60	<.001
PN02	-8.05	<.001	PN10	-9.32	<.001	PN18	-7.61	<.001	PN26	-8.42	<.001
PN03	-8.40	<.001	PN11	-9.05	<.001	PN19	-8.81	<.001	PN27	-9.37	<.001
PN04	-7.63	<.001	PN12	-10.04	<.001	PN20	-7.58	<.001	PN28	-7.73	<.001
PN05	-7.06	<.001	PN13	-10.16	<.001	PN21	-10.01	<.001	PN29	-10.16	<.001
PN06	-6.19	<.001	PN14	-8.14	<.001	PN22	-8.19	<.001	PN30	-12.91	<.001
PN07	-8.64	<.001	PN15	-6.43	<.001	PN23	-10.05	<.001	PN31	-11.21	<.001
PN08	-5.83	<.001	PN16	-8.30	<.001	PN24	-11.66	<.001	PN32	-8.91	<.001

Note. PN = principled negotiation.