This study to identify the nonverbal behaviors of librarians and library users that facilitate or impede information exchange in presearch interviews for computer-based literature searches was part of a larger research project that gathered data on 80 presearch interviews in seven medical libraries. The project also sought (1) to identify verbal behaviors of requesters and search intermediaries; (2) to identify tasks that are accomplished by the librarian to facilitate information exchange; and (3) to objectively code videotaped presearch interviews in terms of the extent to which those tasks were accomplished. The procedures involved in interview selection, nonverbal variables selection, and coding are described, and the results of the analysis are detailed. A bibliography lists 20 sources. (FM)