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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: J Creat Behav. 2018 May 22;54(1):62–74. doi: 10.1002/jocb.345

Table 1.

Fit statistics for the 1PL and the 2PL IRT models

Model Log Likelihood N. of parameters AIC BIC
78-item 1PL −5304.100 79 10766.20 11005.6
78-item 2PL −5214.224 156 10740.45 11213.2
51-item 1PL −3479.062 52 7117.24 7219.70
51-item 2PL −3446.785 102 7517.81 7406.67