Table 2.

Factor loadings from factor analysis of the second trial series. (Data for aggression, exploration (object) and exploration (environment) behaviours were standardized (Z-score) and only eigenvalues greater than one were extracted. Factors were rotated using varimax rotation. Significant loadings are shown in bold.)

colony behaviour	factor 1	factor 2	factor 1	factor 2
	treatment EA		treatment AE
aggression	0.020	−0.990	−0.741	0.195
exploration (object)	−0.884	−0.117	0.757	0.178
exploration (environment)	−0.867	0.178	0.001	−0.970
% variation explained	51.11	34.20	37.39	33.66