Abstract
Four factors jointly responsible for the printing Chapel's cohesion are examined: conflict with the employer, custom, sanctions and the social structure of the group. Cohesion is maintained by practices and principles that are taught by custom and enforced, when necessary, by social sanctions. However, it was found that in practice the strictness with which these principles and practices are kept depends upon feelings of moral obligation. Such feelings are developed most strongly within primary groups. The Chapel is based upon primary relations of this kind. The feelings of moral obligation found within it are particularly strong because (a) the Chapel is a multi-purpose group, and (b) it is group-centered and not leader-centered.