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. 2015 Sep;107:159–173. doi: 10.1016/j.anbehav.2015.06.008

Table A11.

Factors influencing the manipulation time in the alone condition tests

Model terms Estimate SE t df F P Variance SD
Species 1,20 2.63 0.10
 Dogs vs Wolves −0.927 0.587 −1.579
Species*Rank 1,23 2.75 0.10
Rank −0.225 0.212 −1.064 1,17 1.07 0.30
Species*Age 1,26 0.28 0.60
Age 0.022 0.053 0.416 1,21 0.17 0.70
Subject (random) 0.273 0.522
Object (random) 0.000 0.000
Test order (random) 0.000 0.000
Residuals (random) 2.089 1.445

LME statistic: model transformation to fit normal distribution of residuals: log(x); Shapiro–Wilk test: W = 0.98, P = 0.77.