Rationality
/ˌræʃəˈnæləti/
Definitions
The state or quality of being rational; the ability to think logically and make decisions based on reason rather than emotion or intuition.
/ˌræʃəˈnæləti/
The quality of being based on or in accordance with reason or logic.
The judge questioned the rationality of the defendant's actions.
💡 Simply: Rationality means making choices based on smart thinking, like when you weigh the pros and cons of something before deciding. It's using your brainpower instead of just your feelings!
👶 For kids: Being rational means using your brain to make good choices and not just doing things because you feel like it.
More Examples
A focus on evidence is essential to ensuring the rationality of any scientific endeavor.
Her decisions were marked by rationality and a careful consideration of the facts.
How It's Used
"The debate focused on the rationality of the proposed ethical framework."
"Economic models often assume consumer rationality to predict market behavior."
"The study explored the limitations of human rationality in decision-making."
Idioms & expressions
The rationality principle
The idea that people will make decisions based on their rational self-interest.
"Economists often use the rationality principle to predict market behavior."
From Late Latin *rationalitas*, from *rationalis* ('rational'), derived from *ratio* ('reason, reckoning'). The word's development reflects philosophical and scientific emphasis on reason.
The concept of rationality has been central to Western philosophy since the Enlightenment, influencing science, politics, and ethics.
Memory tip
Think of 'ratio' – reason. Rationality is using your reason!