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Table 1. 
Mixed-effect Model Comparison (Likelihood Ratio Chi-square Test) for Behavioral Interaction between Reward History, Age, and Time since Conditioning
Time PointModelAICComparisonχ 2p
Run 1 No age −179.6       
Linear −201.5 No age vs. linear 25.9 <.0001 
Quadratic −197.6 Linear vs. quadratic .11 .94 
Run 2 No age −144.2       
Linear −163.0 No age vs. linear 22.8 <.0001 
Quadratic −162.4 Linear vs. quadratic 3.4 .19 
Run 3 No age −128.8       
Linear −154.7 No age vs. linear 29.9 <.0001 
Quadratic −166.3 Linear vs. quadratic 15.5 .0004 
Time PointModelAICComparisonχ 2p
Run 1 No age −179.6       
Linear −201.5 No age vs. linear 25.9 <.0001 
Quadratic −197.6 Linear vs. quadratic .11 .94 
Run 2 No age −144.2       
Linear −163.0 No age vs. linear 22.8 <.0001 
Quadratic −162.4 Linear vs. quadratic 3.4 .19 
Run 3 No age −128.8       
Linear −154.7 No age vs. linear 29.9 <.0001 
Quadratic −166.3 Linear vs. quadratic 15.5 .0004 
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