Global Coding Scheme (GCS)
see Selected Publications 1, 3, 4, 5, 12, 13, and 14
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Bell, L. G., Cornwell, C. S., & Bell, D. C. (1983). Global scales to code family interaction. Houston: University of Houston - Clear Lake. Available from ERIC (ED248420).
The GCS scales were derived from the Beavers-Timberlawn Family Evaluation Scale and Meyerstein's Family Behavioral Snapshot. The items of the GCS include measures of family mood, warmth, boundaries, comfort with disagreement, conflict, communication, and family health. All interaction process variables in the GCS are measured at the interval level.
Thirty-one items from the GCS measuring family climate and interaction were reduced by theory, factor analysis, and reliability to nine scales. (GCS Scales, below?). These scales were then tested for both internal consistency (Cronbach's alpha) and inter-coder reliability (Pearson correlations). Alpha reliabilities ranged from .68 (clear interpersonal boundaries) to .92 (warmth and support), while intercoder reliabilities ranged from .44 (depression) to .75 (overt conflict).
The 9 emergent scales were then entered into a second-order principal component analysis for the second step of data reduction. Two components emerged, consisting of family connection (warmth and support, depression [-], overt conflict [-], and humor) and family individuation (clear interpersonal boundaries, comfort with differences and disagreements, problem solving efficiency, and covert conflict [-]). Alpha reliabilities were .81 for both connection and individuation. Intercoder reliabilities were .72 for connection and .69 for individuation.