Categories in action: person-reference and membership categorization

The article begins with an effort to clarify and differentiate a variety of terms used by analysts in dealing with mentions of persons in conversation and other forms of talk-in-interaction - such terms as person-reference, identifying, describing, categorizing, and the like. This effort leads to the observation that 'reference to persons' and 'membership categorization' are quite distinct sets of practices, with most reference to persons not being done by membership categories, and most uses of membership categorization devices being in the service of actions other than referring. Two interactional sequences whose analysis turns on a connection to talk earlier in the occasion (a configuration termed 'interactional threads') are then examined; first, to establish what is going on interactionally without respect to the mentioning of persons, and then as exercises in examining the various ways person-reference and membership categorization can figure in a stretch of interaction.