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Table 3. 

Mean Activation (±SD) in the Predefined ROIs for the Two Groups during the Low, Middle (Mid), and High Reward Conditions Contrasted against the No-reward Condition

Region of Interest
Group
Low
Mid
High
Group Effect (F, p)
Interaction Effect (F, p)
Ventral striatum Romanian 0.11 ± 0.17 0.14 ± 0.18 0.07 ± 0.19 4.92, .038 5.11, .035 
Comparison 0.04 ± 0.18 0.65 ± 0.18 0.80 ± 0.20 
Caudate nucleus Romanian 0.12 ± 0.17 −0.23 ± 0.17 0.14 ± 0.18 4.89, .038 2.80, .07 
Comparison 0.01 ± 0.18 0.61 ± 0.18 0.67 ± 0.19 
Amygdala Romanian 0.43 ± 0.28 −0.15 ± 0.19 0.14 ± 0.18 1.21, .28 1.76, .20 
Comparison 0.03 ± 0.29 0.52 ± 0.20 0.41 ± 0.18 
Midbrain Romanian 0.35 ± 0.19 −0.03 ± 0.19 0.33 ± 0.18 1.83, .19 1.63, .21 
Comparison 0.21 ± 0.20 0.60 ± 0.20 0.60 ± 0.18 
Thalamus Romanian 0.33 ± 0.22 −0.04 ± 0.23 0.30 ± 0.23 3.94, .060 2.23, .15 
Comparison 0.33 ± 0.24 0.85 ± 0.24 0.89 ± 0.24 
R Insula Romanian −0.01 ± 0.18 −0.18 ± 0.22 −0.10 ± 0.27 0.44, .52 1.78, .20 
Comparison −0.19 ± 0.20 0.06 ± 0.24 0.32 ± 0.29 
Region of Interest
Group
Low
Mid
High
Group Effect (F, p)
Interaction Effect (F, p)
Ventral striatum Romanian 0.11 ± 0.17 0.14 ± 0.18 0.07 ± 0.19 4.92, .038 5.11, .035 
Comparison 0.04 ± 0.18 0.65 ± 0.18 0.80 ± 0.20 
Caudate nucleus Romanian 0.12 ± 0.17 −0.23 ± 0.17 0.14 ± 0.18 4.89, .038 2.80, .07 
Comparison 0.01 ± 0.18 0.61 ± 0.18 0.67 ± 0.19 
Amygdala Romanian 0.43 ± 0.28 −0.15 ± 0.19 0.14 ± 0.18 1.21, .28 1.76, .20 
Comparison 0.03 ± 0.29 0.52 ± 0.20 0.41 ± 0.18 
Midbrain Romanian 0.35 ± 0.19 −0.03 ± 0.19 0.33 ± 0.18 1.83, .19 1.63, .21 
Comparison 0.21 ± 0.20 0.60 ± 0.20 0.60 ± 0.18 
Thalamus Romanian 0.33 ± 0.22 −0.04 ± 0.23 0.30 ± 0.23 3.94, .060 2.23, .15 
Comparison 0.33 ± 0.24 0.85 ± 0.24 0.89 ± 0.24 
R Insula Romanian −0.01 ± 0.18 −0.18 ± 0.22 −0.10 ± 0.27 0.44, .52 1.78, .20 
Comparison −0.19 ± 0.20 0.06 ± 0.24 0.32 ± 0.29 

The interaction effects if for Group × Reward level. Significant effects are highlighted in bold, with trends highlighted in italics.

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