Functional Activation and Effective Connectivity Differences in Adolescent Marijuana Users Performing a Simulated Gambling Task

Table 5

Model fit statistics. Exploratory SEM was applied to identify best-fit models observed during “Wins” and “Losses” for marijuana users and healthy controls. Model fit was assessed using the root mean square error of approximation (RMSEA), chi-square statistic, degrees of freedom (dof), Tucker-Lewis index (TLI), and goodness-of-fit index (GFI).

	RMSEA	Chi-square	dof	TLI	GFI
Marijuana users
“Wins” model	0.064	496.223	62	0.915	0.960
“Losses” model	0.064	285.827	36	0.898	0.974
Healthy controls
“Wins” model	0.063	483.507	63	0.904	0.961
“Losses” model	0.059	285.764	42	0.908	0.972