The Case of the Cognitive (Opti)miser: Electrophysiological Correlates of Working Memory Maintenance Predict Demand Avoidance .

Main Hypothesis

Humans often prefer tasks that require less cognitive effort, a phenomenon known as demand avoidance.

The authors wanted to see whether individual differences in cognitive control (the ability to filter out irrelevant information in working memory) predict a person’s tendency to avoid demanding tasks.

Specifically, they focused on cognitive filtering efficiency (CFE) — how well someone can ignore unnecessary information during working memory tasks.

Methodology

Participants performed a delayed-match-to-sample task while their ERP (Event-Related Potentials) were recorded.

They also completed a behavioral demand-selection task to measure preferences for high vs. low cognitive effort tasks.

The ERP signal of interest was contralateral delay activity (CDA), which reflects the brain’s control over working memory.

Findings

Positive correlation: Individuals with higher CFE were more likely to avoid high-demand tasks.

In other words, people who could better filter out irrelevant information tended to prefer tasks requiring less mental effort.

Those with lower CFE did not show clear preferences in cognitive effort tasks.

Conclusion: The ability to control working memory (filtering out distractions) predicts individual differences in demand avoidance.

Theoretical Implications

Supports the cognitive miser theory: humans naturally avoid cognitive effort, but this tendency is influenced by specific neural abilities rather than just general “mental laziness.”

Suggests that individual differences in neural sensitivity and cognitive control shape how people perceive and avoid mentally demanding tasks.

Important for understanding decision-making, cognitive control, and why some people consistently avoid effortful tasks while others do not.

Ayesha Saeed