What does behavioral mean?
Behavioral is an adjective describing anything connected with the way people or animals act — their conduct, habits, responses, and reactions. It is a workhorse word in the sciences and professions: psychologists speak of behavioral therapy, economists of behavioral economics, biologists of behavioral patterns in animals, and employers of behavioral interviews that probe how candidates handled past situations. The adjective signals an emphasis on what is observable and measurable rather than on inner thoughts or intentions, a legacy of early twentieth-century behaviorism, which held that psychology should concern itself strictly with visible action. Spelled 'behavioural' in British English and 'behavioral' in American English, it appears most often in formal, academic, and professional contexts. Its usefulness lies in its precision: it narrows a broad topic down to conduct itself, making it indispensable wherever human or animal action is being studied, shaped, or explained.
adjectiveRelating to the way a person or animal acts or conducts itself, especially in response to stimuli or situations. Also used to describe fields of study, therapies, or sciences that focus on observable actions rather than internal mental states.
- Relating to the actions, conduct, or responses of a person or animal.
- Pertaining to academic disciplines or therapeutic approaches (such as psychology or economics) that emphasize observable behavior over introspection.
"The therapist recommended a behavioral approach to managing the child's anxiety."
"The study examined how sleep deprivation affects behavioral performance in children."
"Richard Thaler won a Nobel Prize for his work in behavioral economics."
The word didn't really take off until the 20th century, when psychologists decided that only what can be observed and measured counts as real science.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of behavioral
Behavioral derives from 'behavior' combined with the adjectival suffix '-al'. The noun 'behavior' traces back through Middle English 'behavior' (from the verb 'behave') to the Old English root 'habban' meaning 'to have' or 'to hold', which also gives us 'habit' via Latin 'habitus' — a striking case where the everyday idea of holding oneself connects across languages. The adjective emerged in English relatively late, gaining wide currency in the nineteenth century and becoming especially prominent after the rise of behaviorism in psychology during the early twentieth century. Cognates sharing the same Germanic root include 'habit', 'habiliment', and 'exhibit', all ultimately tied to the notion of holding or having.
Related word forms
How behavioral is actually used
In British English the word is spelled 'behavioural', reflecting the extra 'u' retained in many -our words. The term carries a slightly technical register and is most at home in academic, scientific, clinical, and business writing. In psychology, 'behavioral' often specifically signals an emphasis on measurable, outward actions rather than thoughts or feelings.
Easily confused with behavioral
'Behavioural' is simply the British English spelling of the same word, while 'behavioral' is the American spelling — they are not different words.