social interaction data item William R. Hogan Matthew Diller A data item that is about one or more instances of social interaction between two or more individuals, and that specifies the temporal duration of interaction, spatial distance of individuals, geographical location of individuals, and the number of individuals participant in some social behavior(s). A data item that is about one or more instances of social interaction between two or more individuals, and that specifies the temporal duration of interaction, spatial distance of individuals, geographical location of individuals, and the number of individuals participant in some social behavior(s). data item