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Affective vs. effective. Affective is an adjective meaning influenced by emotions or arousing emotions. It is roughly synonymous with emotional. Itâs used mainly in psychology, where affective disorders are conditions characterized by emotional problems or mood disturbances, though it does appear occasionally outside psychology.
Definition of effective for Students. 1  1 : producing or able to produce a desired effect effective medicines. 2  2 : impressive an effective speech. 3  3 : being in operation The rule is effective immediately.