Borgatta, E. F., L. S. Cottrell , and H. J. Meyer ( 1956 ) "On the dimensions of group behavior." Sociometry19: 222-240.
2.
Cattell, R. B. (1951) "New concepts for measuring leadership, in terms of group syntality." Human Relations4: 161-184.
3.
——— (1948) "Concepts and methods in the measurement of group syntality." Psych. Rev.55: 48-63.
4.
Hackman, J. R. and C. G. Morris (1975) "Group tasks, group intereaction process, and group performance effectiveness." Advances in Experimental Social Psychology8: 45-99.
5.
McDougall, W. (1920) The Group Mind. New York: Putnam.
6.
Tryon, W. (1979) "The test-trait fallacy." Amer. Psychologist34: 402-406.
7.
Warriner, C. K. (1956) "Groups are real: A reaffirmation." Amer. Soc. Rev.21: 549-554.