TABLE 2.

Comparison between different models - model fit statistics.

Model	χ2	df	RMSEA	SRMR	CFI	TLI
Model 1 (baseline)	293.6**	207	0.027 (0.019–0.034)	0.054	0.924	0.915
Model 2 (Model 1 without the AFI – number of children path)	294.1**	208	0.027 (0.019–0.033)	0.054	0.924	0.916
Model 3 (Model 2 without Conscientiousness – number of children path)	294.43**	209	0.026 (0.019–0.033)	0.054	0.925	0.917
Model 4 (Model 3 without N × IQ – number of children path)	296.48**	211	0.026 (0.019–0.033)	0.054	0.925	0.918
Model 4/females	289.96**	211	0.036 (0.025–0.046	0.078	0.872	0.86
Model 4/males	261.09*	211	0.028 (0.014–0.039)	0.068	0.911	0.902
Model 4 females vs. males unconstrained	569.33**	438	0.032 (0.024–0.039)	0.074	0.888	0.882
Model 4 females vs. males constrained	614.97**	472	0.032 (0.025–0.039)	0.079	0.878	0.881

AFI, Age of first intercourse; N, Neuroticism; RMSEA, the root mean square error of approximation; SRMR, the standardized root mean residual; CFI, confirmatory fit index; TLI, the Tucker-Lewis index; the 90% CI for RMSEA are in brackets; df, degrees of freedom; *p <0.05; **p < 0.001