Feedback processing in children and adolescents: Is there a sensitivity for processing rewarding feedback?

Area of Science:

• Developmental Neuroscience
• Cognitive Psychology
• Neuroimaging

Background:

• Children's reliance on external feedback differs from adults, with prior research yielding conflicting results on their sensitivity to feedback valence (positive vs. negative) and expectancy.
• Existing studies often fail to distinguish between feedback valence and expectancy, potentially explaining discrepancies in developmental findings regarding feedback processing.
• Understanding the neurophysiological basis of feedback processing in developing individuals is crucial for elucidating learning mechanisms.

Purpose of the Study:

• To investigate the neurophysiological correlates of feedback processing in children (8-10 years) and adolescents (12-14 years).
• To differentiate the effects of feedback valence and expectancy on brain activity using a time estimation paradigm.
• To explore age-related differences and potential links between neural activity and behavioral adaptation in feedback learning.

Main Methods:

• Utilized a time estimation paradigm to present feedback stimuli with varying valence and expectancy.
• Recorded event-related potentials (ERPs), specifically focusing on the feedback-related negativity (FRN) and P300 components.
• Analyzed ERP data to assess neural responses to feedback characteristics in children and adolescents, correlating with behavioral performance.

Main Results:

• Neither children nor adolescents showed differential feedback-related negativity (FRN) responses to unexpected positive versus negative feedback, refuting higher sensitivity to positive feedback.
• The FRN component did not differentiate between expected and unexpected feedback in children and adolescents, unlike findings in adults.
• The P300 component revealed that children and adolescents processed feedback unexpectedness, with adolescents demonstrating a more frontal P300 expectancy effect linked to better behavioral adaptation.

Conclusions:

• Children and adolescents' early feedback processing (FRN) is not biased by valence or expectancy in the same manner as adults.
• Feedback unexpectedness is processed later in development, reflected in the P300 component.
• Enhanced frontal brain activity (P300 effect) in adolescents may facilitate more effective learning from feedback, suggesting developmental maturation of feedback processing networks.