Table 7 Correlations among PND, IRD, and Tau-U¹⁾

Indicator	PND	IRD	Tau-U
PND	1	.999	.997
IRD	.999	1	.997
Tau-U	.997	.997	1

Spearman’s rank-order correlation coefficients(ρ) are reported. n = 111. All correlations were significant at p < .001.