How Sequentially Changing Reward Prospect Modulates Meta-control: Increasing Reward Prospect Promotes Cognitive...

Area of Science:

• Cognitive psychology
• Neuroscience
• Decision-making

Background:

• Meta-control is crucial for balancing cognitive stability and flexibility.
• Performance-contingent reward influences cognitive control, affecting task switching.
• Previous studies suggest reward prospect modulates cognitive flexibility, but alternative explanations exist.

Purpose of the Study:

• To investigate the role of increasing reward prospect in cognitive flexibility.
• To differentiate between general flexibility enhancement and task-specific switching facilitation.
• To test the hypothesis that increasing reward prospect lowers the working memory updating threshold.

Main Methods:

• Conducted a series of uncued task switching experiments involving three univalent tasks.
• Manipulated reward prospect (increasing vs. remaining high).
• Measured reaction times (RTs) for repetitions and switches, and voluntary switch rates.

Main Results:

• Increasing reward prospect significantly reduced reaction time (RT) switch costs and increased voluntary switch rates.
• High reward prospect led to faster repetition RTs, slower switch RTs, and reduced voluntary switch rates.
• Results indicate participants were equally ready to respond to task repetitions or switches under increasing reward prospect.

Conclusions:

• Increasing reward prospect acts as a meta-control signal promoting cognitive flexibility.
• This effect is likely mediated by a lowered updating threshold in working memory.
• Findings support the role of reward in adaptive cognitive control, particularly in complex task environments.