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Background: The ability to interpret face-emotion displays is critical for the development of adaptive social interactions. Using a novel variant of a computational model and fMRI data, we examined behavioral and neural associations between two metrics of face-emotion labeling (sensitivity and bias) and age in youth.

Methods: Youth and adults (n=44, M age=20.02, SD=7.44, 8-36) completed an explicit face-emotion labeling fMRI task including happy to angry morphed face-emotions. A drift diffusion model was applied to choice and reaction time distributions to examine sensitivity and bias in interpreting face-emotions. Model fit and reliability of parameters were assessed on adult data (n=42). Linear and quadratic slopes modeled brain activity associated with dimensions of face-emotion valence and ambiguity during interpretation.

Results: Behaviorally, age was associated with sensitivity. Age related …