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. 2019 Feb 15;79(5):911–930. doi: 10.1177/0013164419829855

Table 3.

Model Fits of Descriptive and Explanatory IRTree Models.

Models −2 LL AIC BIC
1a.Descriptive model with one trait factor and no ERS factors 23316.2 23378.0 23637.0
2a.Descriptive model with one trait factor and one ERS factor 22683.6 22730.0 22922.0
3a.Descriptive model with one trait factor and two ERS factors 22457.0 22529.0 22830.0
2.Explanatory model with one trait factor and two ERS factors 22620.8 22657.0 22807.0

Note. Trait represents self-esteem. IRTree = item response tree; ERS = extreme response style; −2 LL = −2 times log likelihood; AIC = Akaike information criterion; BIC = Bayesian information criterion. Lower values of −2 LL, AIC, and BIC indicate that the model fits better to the data.