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Decision making and the avoidance of cognitive demand.

Wouter Kool¹, Joseph T McGuire, Zev B Rosen

¹Department of Psychology, Princeton University, Princeton, NJ 08540, USA.

Journal of Experimental Psychology. General

|September 22, 2010

Summary

People prefer easier tasks, showing a bias towards less cognitive demand. This "law of less work" applies to mental effort, influencing choices even when unaware of the difficulty.

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Area of Science:

Cognitive Psychology
Behavioral Economics
Neuroscience

Background:

Established theories suggest actions minimize exertion (law of less work), primarily supported by physical effort data.
This principle has been extended to cognitive demand, but its validity requires empirical evaluation.
Understanding cognitive effort minimization is crucial for behavioral decision-making models.

Purpose of the Study:

To empirically test the assumption that individuals minimize cognitive demand in behavioral choices.
To investigate the factors influencing the choice between actions with varying cognitive effort requirements.

Main Methods:

Conducted 6 behavioral experiments where participants freely chose between actions with different controlled information processing demands.
Manipulated demand levels and choice settings to assess the robustness of observed biases.
Analyzed data to rule out alternative explanations like error avoidance or time minimization.

Main Results:

A consistent bias favoring less cognitively demanding options was observed across experiments.
This bias persisted regardless of awareness of demand manipulation and was not explained by task efficiency metrics.
Avoidance of cognitive demand was sensitive to incentives and individual differences in executive control.

Conclusions:

The findings support the extension of the law of less work to cognitive demand, demonstrating a preference for easier mental tasks.
Anticipated cognitive demand significantly influences behavioral decision-making, aligning with motivational accounts.
Convergent neuroscientific evidence further supports the role of cognitive demand in choice.