Bytheway discusses the problems of representation and sampling methodology found in the Three Generation Family Study directed by Hill at the University of Minnesota. Hill responds to this criticism and challenges Bytheway to provide a better sampling design. (Author/HLM)

Examines difficulties associated with the use of conversational features in the analysis of mother-infant vocalization episodes. Observations of six mother-infant dyads revealed difficulties involving (1) pooling of data; (2) the unit of analysis; and (3) selection of appropriate "expected" values for dyadic parameters used in tests of…

Research is reviewed on the interaction patterns of individuals using augmentative and alternative communication systems. Major findings and limitations of interaction studies are highlighted, focusing on methodological approaches, subjects, partners, contexts and sampling procedures, and measures and data analyses. Directions for future research…