Theories of affect tend to articulate the term affect in relation to some idea of emotion. Perhaps the locus classicus of this distinction is to be found in Brian Massumi's work on affect. As Massumi writes,
"An emotion is a subjective content, the sociolinguistic fixing of the quality of an experience, which is from that point onward defined as personal. Emotion is qualified intensity, the conventional consensual point of insertion of into intensity into semantically and semiotically formed progressions, into narrativizable action-reaction circuits, into function and meaning. It is owned and recognized. It is crucial to theorize the difference between affect and emotion."