Table 1 Area covered by scent marks in the social competition assay when analysing the area closest to the barrier.

From: Communal breeding affects offspring behaviours associated with a competitive social environment

Factors

Estimate ± SE

Test statistic

P-value

Intercept

5.746 ± 1.362

4.218

0.018

a. Stimulus male present versus absent

(CN-0, SN-0) vs. (CN-R, CN-U, SN-R, SN-U)

0.759 ± 0.359

2.115

0.040

b. CN versus SN subjects (stimulus male present)

(CN-R, CN-U) vs. (SN-R, SN-U)

−1.538 ± 1.392

−1.105

0.335

c. CN versus SN subjects (stimulus male absent)

CN-0 vs. SN-0

−0.508 ± 1.570

−0.324

0.757

d. Related versus unrelated stimulus male (CN subjects)

CN-R vs. CN-U

2.306 ± 0.772

2.988

0.004

e. Related versus unrelated stimulus male (SN subject)

SN-R vs. SN-U

−0.091 ± 0.819

−0.112

0.911

  1. Orthogonal contrasts are presented which were performed after confirming that the interaction between treatment and background was significant (p < 0.1). Intercept estimate represents the grand mean of all treatments. Orthogonal comparisons of the treatments (a-e) are displayed as: CN-0 = communal nest reared – control; SN-0 = single nest reared – control; CN-R = communal nest reared – related opponent; CN-U = communal nest reared – unrelated opponent; SN-R = single nest reared – related opponent; SN-U = single nest reared – unrelated opponent. The direction of comparison within a contrast is left to right and the estimate value always refers to the treatment(s) to the right. If treatments are combined in parentheses, mean values of these treatments are used in the comparisons. N = 17 test males in 68 trials; P-values < 0.05 are highlighted in bold. Further details on the statistical analysis are provided in the Methods section.
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