Behaviourally

Behaviourally is an adverb derived from the adjective behavioural. It denotes actions, responses, or assessments that relate to observable behavior. In British English, the corresponding adverb follows behavioural, while American English typically uses behaviorally. The term appears mainly in formal, academic, or technical writing to specify that a statement concerns observable conduct rather than internal states.

In scientific and professional contexts, behaviourally oriented measures rely on external observations such as performance, choices, or recorded actions. Researchers may report results behaviorally or behaviourally, depending on the publication’s spelling convention. The distinction between behaviorally derived data and data based on self-report or introspection is frequently addressed in methodology sections.

In psychology, education, and market research, behaviourally derived data emphasize what participants do rather than what they say. Phrases such as behaviourally anchored scales or behaviourally based assessments describe methods grounded in observed behavior rather than stated beliefs or intentions.

As a grammatical form, behaviourally is a standard adverb derived from behavioural; capitalization is only for sentence starts or proper nouns. It is not a standalone concept, but a routine linguistic form used to modify verbs or adjectives related to observable behavior.

Related terms include behavioral (the American variant of the adjective) and behaviorism, along with topics in behavioral economics and other behavior-focused disciplines.