Table 1. Descriptive statistics, fit indices, and standardized factor loadings for self-efficacy and enjoyment scales across subsamples, gender, and age.

Subsample (n)	Gender, age	Scale	M ± SD	χ2 (df = 2)	CFI	TFI	SRMR	RMSEA (90% CI)	Factor loadings (min–max)
1 (1674)	Girls, 6 yrs.	Self-efficacy	3.39 ± 0.56	2.313	1.000	.999	.006	.010 (.000–.050)	.592–.785
		Enjoyment	4.78 ± 0.44	3.440	.999	.998	.010	.021 (.000–.057)	.706–.826
2 (1673)		Self-efficacy	3.47 ± 0.55	1.468	1.000	1.001	.005	.000 (.000–.044)	.686–.769
		Enjoyment	4.81 ± 0.39	9.672	.997	.992	.013	.048 (.021–.080)	.775–.850
1 (1696)	Boys, 6 yrs.	Self-efficacy	3.53 ± 0.49	7.438	.995	.984	.013	.040 (.012–.073)	.577–.736
		Enjoyment	4.78 ± 0.46	4.378	.999	.996	.010	.026 (.000–.061)	.676–.843
2 (1696)		Self-efficacy	3.58 ± 0.48	.085	1.000	1.005	.001	.000 (.000–.000)	.631–.703
		Enjoyment	4.80 ± 0.45	7.228	.998	.994	.009	.039 (.011–.072)	.788–.863
1 (1807)	Girls, 7 yrs.	Self-efficacy	3.42 ± 0.49	4.103	.999	.997	.008	.024 (.000–.058)	.635–.741
		Enjoyment	4.81 ± 0.33	20.353	.984	.953	.029	.071 (.045–.101)	.622–.804
2 (1806)		Self-efficacy	3.50 ± 0.48	15.956	.995	.984	.016	.062 (.036–.092)	.675–.802
		Enjoyment	4.82 ± 0.33	17.995	.993	.980	.020	.067 (.041–.096)	.741–.844
1 (1842)	Boys, 7 yrs.	Self-efficacy	3.53 ± 0.48	11.551	.995	.985	.014	.051 (.025–.081)	.670–.725
		Enjoyment	4.77 ± 0.42	4.081	.999	.997	.009	.024 (.000–.057)	.710–.828
2 (1841)		Self-efficacy	3.59 ± 0.44	16.623	.991	.973	.018	.063 (.037–.093)	.641–.758
		Enjoyment	4.80 ± 0.36	5.582	.998	.994	.011	.031 (.000–.063)	.718–.806

Notes.

χ²(df)

chi-square (degrees of freedom)

CFI

comparative fit index

TLI

Tucker Lewis fit index

SRMR

standardized root mean square residual

RMSEA

root mean square error of approximation

Confirmatory factor analysis fit indexes are satisfactory for both measures across subsamples, gender, and age.