Intertwining personal and reward relevance: evidence from the drift-diffusion model.

Area of Science:

• Neuroscience
• Cognitive Psychology
• Decision Science

Background:

• The relationship between self and reward is debated, with Northoff and Hayes proposing three models.
• Empirical support for existing models linking self and reward is limited.
• Understanding how personal relevance and reward value influence decision-making is crucial.

Purpose of the Study:

• To empirically test common and distinct effects of personal relevance and reward values on perceptual decision-making.
• To investigate the validity of the parallel processing model of self and reward.
• To de-component different stages of perceptual decision-making using a drift-diffusion approach.

Main Methods:

• An associative matching paradigm was used with 40 participants.
• Participants formed associations between shapes, labels, personal relevance, and reward values.
• A drift-diffusion approach analyzed perceptual decision-making stages.

Main Results:

• High personal relevance and high reward value similarly facilitated behavioral performance, acting as socially important signals.
• Differential effects of personal and monetary relevance were observed in non-decisional time.
• Task-specific stimulus prioritization influenced decision-making.

Conclusions:

• Findings support the parallel processing model, indicating self-specific processing occurs alongside high reward processing.
• Personal relevance and reward value share common processing pathways but also have distinct influences.
• The study provides empirical evidence for parallel self and reward processing in decision-making.