Uncertainty and the difficulty of thinking through disjunctions

Area of Science:

• Cognitive Psychology
• Decision Science
• Behavioral Economics

Background:

• Decision-making under uncertainty often violates established principles like Savage's sure-thing principle.
• Common reasoning problems frequently lead to confusion and errors, suggesting underlying cognitive biases.

Purpose of the Study:

• To explore the link between decision-making under uncertainty and the cognitive process of thinking through disjunctions.
• To identify a common cause for errors in various reasoning tasks and decision scenarios.

Main Methods:

• Analysis of decision situations that violate Savage's sure-thing principle.
• Review of simple reasoning problems known to generate confusion and errors.
• Application of a novel interpretation to diverse cognitive tasks.

Main Results:

• A reluctance to "think through disjunctions" is identified as a key factor in decision-making errors.
• Individuals tend to suspend judgment at decision nodes rather than exploring hypothetical outcomes.
• This reluctance explains errors in decision making, information search, reasoning, and probabilistic judgment.

Conclusions:

• The tendency to avoid thinking through disjunctions is a significant cognitive bias affecting multiple domains.
• Understanding this bias offers insights into errors in logic, probability, and decision-making.
• Potential corrective procedures can be developed to mitigate the impact of this cognitive reluctance.