Charting uncharted terrain: a behavioral observation system for mutual help groups.

Describes the development of a behavioral observation system for mutual help meetings and presents evidence supporting its reliability, validity, and utility. The MHOS-BIC (Mutual Help Observation System-Behavioral Interaction Codes) was used by 10 observers to record the sequential flow of group interaction in 527 meetings. Psychometric analyses indicate that the system performed consistently with measurement objectives. Mean kappas for each of the 12 coding categories ranged from .62 to .87; the system demonstrated sensitivity to setting and time differences; and a predictable pattern of correlations was found among BIC categories and conceptually related participant and observer ratings. Studies using the BIC to address substantive questions about mutual help are reviewed, providing further evidence for its validity and utility. An empirical description of mutual help is presented using BIC data, and the promises and limitations of the system are discussed.