Table 3 Exploratory factor analysis with varimax rotation for 18 items in the questionnaire of principled negotiation

Item	Factor 1	Factor 2	Factor 3	Factor 4
PN16	0.77
PN18	0.68
PN26	0.67
PN28	0.63
PN07	0.50
PN13	0.43
PN17		0.83
PN11		0.71
PN19		0.66
PN30		0.66
PN22		0.56
PN05			0.83
PN06			0.64
PN10			0.45
PN08			0.44
PN03				0.75
PN01				0.71
PN02				0.50

Note. PN = principled negotiation.