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

Table A13.

Factors influencing the approach latency in the pair condition tests

Model terms Estimate SE t df F P Variance SD
Species 1,24 2.76 0.11
 Dogs vs Wolves −0.039 0.024 −1.660
Species*Rank distance 1,130 1.06 0.31
Rank distance 0.007 0.009 0.774 1,129 0.60 0.44
Species*Age 1,18 1.22 0.28
Age 0.001 0.002 0.326 1,20 0.11 0.75
Species*Siblings 1,117 0.00 0.99
Siblings 1,133 7.740 0.006
 No vs Yes 0.056 0.019 2.782
Subject (random) 2.016e−03 4.490e−02
Partner (random) 1.399e−15 3.742e−08
Object (random) 7.848e−04 2.801e−02
Test order (random) 7.632e−16 2.763e−08
Residuals (random) 6.014e−03 7.755e−02

LME statistic: model transformation to fit normal distribution of residuals: 1/x; Shapiro–Wilk test: W = 0.988, P = 0.256. Significant P and t values in bold.