The term affective was used by Klima (1964) as denoting a property ('feature') of constituents that license Negative polarity items.
- "As for the grammatical similarities of neg, wh and only, these will now be described as resulting from the presence of a common grammatico-semantic feature to be referred to as Affect(ive). Any Quant(ifier) in construction with a constituent that contains the feature Affect(ive) may ultimately appear as an indefinite." (Klima 1964:313)
- Klima, Edward S. 1964. Negation in English. In Jerry A. Fodor and Jerrold J. Katz (eds.) The structure of language. Englewood Cliffs: Prentice Hall, 246-323.