Key points are not available for this paper at this time.
David A. Snow, Louis A. Zurcher, Jr., Sheldon Ekland-Olson, Social Networks and Social Movements: A Microstructural Approach to Differential Recruitment, American Sociological Review, Vol. 45, No. 5 (Oct., 1980), pp. 787-801
Snow et al. (Wed,) studied this question.