Table 3. Fit Indices for Standard and Revised Models.

Standard Model	χ2	χ2 p-value	CFI	RMSEA	lower CI	upper CI	RMSEA p
Adults	353.36	<0.001	0.96	0.07	0.06	0.08	0.001
Young Adults	541.75	<0.001	0.94	0.07	0.07	0.08	<0.001
Late Adolescents	323.15	<0.001	0.95	0.07	0.06	0.96	0.001
Early Adolescents	245.59	<0.001	0.96	0.06	0.04	0.07	0.22
Children	281.12	<0.001	0.91	0.08	0.06	0.10	0.002
Revised Model	χ2	χ2 p-value	CFI	RMSEA	lower CI	upper CI	RMSEA p
Adults	77.15	0.01	0.99	0.05	0.02	0.07	0.58
Young Adults	69.96	0.04	0.99	0.03	0.01	0.05	0.98
Late Adolescents	63.78	0.11	0.99	0.04	0.00	0.06	0.75
Early Adolescents	90.23	0.001	0.97	0.07	0.05	0.09	0.08
Children	117.53	<0.001	0.90	0.11	0.08	0.13	<0.001

Fits for the standard model are derived from confirmatory factor analysis examining the whole sample. Fits for the revised model utilize the second half of participants only (independent from those used for the exploratory analysis; children N=115, early adolescents N=156, late adolescents N=177, young adults N=422, adults N=235). The revised model removed the FUN subscale as well as removing BIS1, BIS5, BIS7, and REWARD3. Fit indices include χ² (chi-square test statistic: standard model df = 164; revised model df = 51) and associated p-value, comparative fit index (CFI), and root mean squared error of approximation (RMSEA) and associated 90% confidence interval (CI) upper and lower bounds and p-value. CFI ≥ 0.95, RMSEA ≤ 0.06, RMSEA upper CI ≤ 0.08, and RMSEA p>0.05 are in bold.