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. Author manuscript; available in PMC: 2016 Mar 21.
Published in final edited form as: Anim Behav. 2008 May 1;75(5):1757–1770. doi: 10.1016/j.anbehav.2007.09.036

Table 2.

The effect of begging gestures on actor’s responses

Parameter Odds ratio SE Z P 95% bounds
Upper Lower
Model 1*
Gesture 1.04 0.42 0.09 0.925 0.47 2.32
Trial 0.91 0.02 −5.25 <0.001 0.88 0.95
Position 1.56 0.63 1.10 0.271 0.71 3.42
Brandy 4.57 4.32 1.61 0.108 0.72 29.12
Candy 0.48 0.35 −1.02 0.308 0.12 1.97
Jadine 1.32 1.02 0.36 0.718 0.29 5.97
Kara 0.20 0.14 −2.25 0.025 .05 0.81
Megan 0.12 0.09 −2.81 0.005 0.29 0.53
Mindy 0.09 0.07 −3.15 0.002 0.02 0.41
Model 2
Gesture 0.82 0.20 −0.79 0.427 0.51 1.32
Trial 0.93 0.02 −3.48 <0.001 0.90 0.97
Position 1.41 0.32 1.53 −0.127 0.91 2.19
*

The binary logistic regression model included categorical variables for individuals as predictors in addition to the variables shown. The variable gesture was coded so that the odds ratios would exceed 1 if actors were more likely to dislodge the other reward when a recipient gestured.

The binary logistic regression model used clustered robust standard errors to calculate the confidence intervals for predictor variables.