1. 2. S Asch, Effects of group pressure upon the modification and distortion of judgments Swarthmore College Progress Report on Office of Naval Research Project, Task Order N70nr-38003, 1950 .
2. 3. Block, and Jack, An experimental investigation of the construct of egocontrol . Unpublished doctor's dissertation , Stanford Univer., 1950 .
3. 4Block, and Jeanne. An experimental study of a topological representation of ego-structure, Unpublished doctor's dissertation , Stanford Univer, 1951 .