reactivity.

1. The readiness or degree with which a person or system responds when exposed to a stimulus or influence.

2. A substance’s tendency to undergo chemical change under specified conditions.

Use it for

Words that belong together

• emotional reactivity
• physiological reactivity

On the page

Emotional reactivity differed across situations rather than appearing as one fixed response.

The study measured physiological reactivity to the task separately from participants’ reported discomfort.

Usage notes

Primary category: psychology / character / human behavior. Forms: Usually uncountable. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: characterization, motivation analysis, behavioral comparison, qualification. Disciplines: psychology, social behavior, character writing. Commonness: moderately common.