Working Memory Workload When Making Complex Decisions: A Behavioral and EEG Study

Area of Science:

• Cognitive Neuroscience
• Decision Science

Background:

• Working memory (WM) is vital for effective decision-making, integrating current and past information.
• Understanding WM's role in complex, real-life decision-making requires examining behavioral and neural correlates.

Purpose of the Study:

• To explore behavioral and electrophysiological (EEG) correlates of working memory during a novel decision-making task.
• To assess working memory workload in relation to contextual variables in complex managerial decisions.

Main Methods:

• A novel decision-making task with encoding, retrieval, and metacognition phases was developed.
• EEG data (delta, theta, alpha, beta bands) and behavioral indices (decision-making efficiency, complexity tolerance, metacognition) were collected from 24 participants.

Main Results:

• Decreased alpha/beta activity in temporoparietal areas during encoding suggests verbal WM performance and load effects.
• Decreased alpha and increased beta activity in specific areas during retrieval indicate active processing and focused attention.
• Correlational analyses linked EEG bands with behavioral indices of decision-making.

Conclusions:

• The novel task effectively integrates behavioral, metacognitive, and EEG data to assess WM workload.
• Specific EEG frequency bands (alpha, beta) are key neural correlates of working memory during complex decision-making.
• Findings offer insights into the neural mechanisms underlying effective managerial decision-making.