Home › Psychology › Cognitive Biases & Heuristics › heuristic

heuristic

hyoo-RIS-tik /hjʊəˈrɪstɪk/

nounadjectiveC1GREGMATCAT

academicformal

A practical rule of thumb or mental shortcut used to speed up problem-solving and decision-making.

Implies a rule that is efficient and usually adequate, but not guaranteed to be optimal or logically perfect.

The story behind the word. The term stems from the Greek 'heuriskein', meaning 'to find' or 'discover'—the exact same root behind Archimedes' famous exclamation 'Eureka!' ('I have found it!'). Modern cognitive psychology adopted it in the 20th century to describe the rules of thumb humans use to discover quick solutions without exhaustive calculations.

Word relationships

shortcut: Shortcut is informal and general, whereas heuristic specifically denotes a cognitive or algorithmic rule.

algorithm: An algorithm guarantees a correct solution through systematic rules, whereas a heuristic prioritizes speed over certainty.

Commonly confused with

hermeneutic: Hermeneutic relates to interpretation of texts, whereas heuristic relates to problem-solving shortcuts.

Word family

heuristically (adverb): In a manner relying on practical shortcuts.

Collocations

cognitive heuristic
heuristic device
heuristic evaluation
heuristic approach

Idioms & expressions

rule of thumb

Example sentences

"Availability heuristic leads people to assess risk based on how easily recent examples come to mind." Behavioral economics
"The program uses a simple heuristic to filter spam emails before applying deeper analysis." Software engineering

Memory hook

Think of Archimedes shouting 'Eureka!' when finding a clever shortcut in his bathtub. Heuristic = 'Eureka' shortcut.

When not to use

Do not use to describe formal mathematical algorithms or step-by-step rigorous logical proofs.

Fun facts

Nobel laureate Herbert Simon originally coined 'satisficing' to explain how humans rely on heuristics rather than searching for optimal decisions.