. Author manuscript; available in PMC: 2023 Feb 1.

Published in final edited form as: Exp Clin Psychopharmacol. 2022 May 19;31(1):238–247. doi: 10.1037/pha0000570

Table 4.

Principal Component Analysis Factor Loadings

Metric	Factor 1	Factor 2
Intensity	0.893^*	0.338
O _max	0.826^*	−0.328
P _max	−0.094	−0.932^*
Breakpoint	0.150	−0.801^*
α	0.740^*	−0.363
Eigenvalues	2.70	1.34
% Variance	53.97%	26.72%

Note. The entered variables were intensity, O_max, P_max, breakpoint, and 1/α. O_max, P_max, and α were log₁₀ transformed to meet normality assumptions.

denotes absolute value >0.40 used as threshold for significant loading onto factor.