Table 1.
Actual caregiving | R2 | Intercept | Variable | Standard β | t |
Full model | 0.35 | 83.7 | Testosterone | −0.42 | −3.07*** |
Testes volume | −0.11 | −0.83 | |||
Father’s earnings | −0.13 | −0.83 | |||
Father’s hours worked | −0.24 | −1.53 | |||
Reduced model | 0.21 | 77.9 | Testosterone | −0.34 | −2.61** |
Testes volume | −0.23 | −1.75* |
Results of linear regression analyses showing the variance in paternal caregiving explained by the full model, which includes all variables correlated with caregiving in a simple correlation analysis, and the reduced model, which includes only measures of reproductive biology. *P < 0.10, **P < 0.05, and ***P < 0.005. P values are two-tailed.