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Table 1 Comparison of goodness of fit between models with and without Group as fixed factor for behavioral measures

From: Individual differences in skill acquisition and transfer assessed by dual task training performance and brain activity

Dependent variable Individual differences Comparison against null model Comparison between models
Log likelihood \({\chi }^{2}\) p value \({\chi }^{2}\) p value
Scan No − 526.10 12.00 0.017 33.40  < 0.001
Yes − 509.41 45.39  < 0.001
Not scan No − 502.56 12.33 0.015 14.86 0.011
Yes − 495.13 26.32 0.001
Over scan No − 524.71 1.73 0.786 19.50 0.002
Yes − 514.96 20.09 0.010
Adaptive target find No 40.42 5.39 0.250 13.45 0.020
Yes 47.15 12.41 0.134
  1. The following models were compared: 1 + (1 | ID) vs 1 + Session + (1|ID), 1 + Group + (1 | ID) vs 1 + Group + Group: Session + (1|ID), 1 + Session + (1 | ID) vs 1 + Group + Group: Session + (1|ID). For models without and with individual differences, the number parameters were 7 and 12, and degrees of freedom were 4 and 8, respectively. Degrees of freedom for comparison between models were 5