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. Author manuscript; available in PMC: 2018 Feb 1.
Published in final edited form as: Dev Psychol. 2016 Nov 7;53(2):274–289. doi: 10.1037/dev0000238

Table 3.

Study 2 Zero Inflated Negative Binomial Model Predicting Number of Tokens Donated and Not Giving versus Giving.

Number of Tokens Donated (counts model component) Not Giving versus Giving (logistic model component)

B C.R. p B C.R. p
Intercept 2.59  1.98
Sex   −.14 .69 .49 −1.53 2.94 .00
Linear Term for Baseline RSA   −.06 .70 .51  −.18 .82 .41
Quadratic Term for Baseline RSA  −.10 1.98 .05  11 1.03 .30

Note. RSA = Respiratory sinus arrhythmia. C.R. = Critical ratio (unstandardized beta estimate divided by its estimated standard error). Sex is dummy coded (boys = 0, girls = 1).