rationality
rash-uh-NAL-i-tee
/ˌræʃəˈnæləti/
The quality of being based on or in accordance with reason or logic, especially making economic choices that maximize self-interest.
In neoclassical economics, rationality specifically assumes individuals systematically process information to maximize utility.
The story behind the word. From Latin 'ratio', meaning 'reckoning', 'account', or 'calculation'. The economic concept directly inherits this sense of mathematical calculation: economic actors carefully calculating costs and benefits to reach optimal decisions.
Word relationships
- reasonableness: Implies sensible social judgment rather than mathematical decision optimization.
- logic: Refers to the formal rules of reasoning rather than practical decision-making behavior.
- irrationality: Action or thought that defies logic or self-interest optimization.
Commonly confused with
- rationalization: Rationalization is inventing excuses for behavior after the fact, while rationality is logical decision-making beforehand.
Word family
- rational (adjective): Based on or in accordance with reason or logic.
- rationalize (verb): To attempt to explain or justify behavior with logical reasons.
Collocations
- bounded rationality
- economic rationality
- assume rationality
- perfect rationality
Example sentences
- "Classical economic models assume perfect human rationality when calculating consumer purchasing decisions." Classical Economics
- "Behavioral economists challenge the assumption of perfect rationality by highlighting recurring cognitive biases." Behavioral Finance
Memory hook
RATIO-nality: balancing ratios and numbers to make logical choices. Calculating the best logical option.
When not to use
Do not confuse economic rationality (utility maximization) with moral goodness or common emotional sanity.
Fun facts
- Herbert Simon won the Nobel Prize in Economics for proving 'bounded rationality'—that humans make logical choices within strict limits of time and information.
Related words
Explore more words
rationalize, rationale, rationalization, rationalism, autonomy
Also appears in
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