Table 3.

Results of the multiple regression on the relative productivity of 27 laboratory T. longispinosus colonies (F_9,17 = 5.62; p < 0.001; r²_adjusted = 0.615). (Colony behaviours were analysed by testing 10 workers per colony separately in standardized assays. Significant results are given in bold.)

explanatory variable	β-value	p-value
aggression	0.331	0.095
s.d. aggression	−0.059	0.707
exploration (object)	−0.420	0.040
s.d. exploration (object)	0.488	0.007
exploration (environment)	−0.100	0.479
s.d. exploration (environment)	−0.087	0.919
brood care	−0.782	0.001
s.d. brood care	0.847	0.0002
colony size	−0.166	0.340