Table 1.

Factor analysis of open field-related variables

Trait	Females factor 1	factor 2	Males factor 1	factor 2
% time in Thigmotaxis zone	0.96	−0.05	0.97	0.01
% distance in Thigmotaxis zone	0.96	0.04	0.94	−0.04
Rearing	−0.24	−0.15	−0.39	0.22
Grooming duration	0.01	0.76	0.12	−0.70
Grooming frequency	−0.11	0.75	−0.09	−0.37
Defecation	0.19	0.46	−0.05	−0.34
Jumping	−0.04	−0.25	0.10	0.40
Leaning	0.29	−0.43	0.29	0.59
Locomotion	−0.15	−0.59	−0.09	0.77

Harris-Kaiser rotation method; factor loadings >l0.30l are in bold