Bryan, J.H. & Test, M. A. Models and helping: Naturalistic studies in aiding behavior. Journal of Personality and Social Psychology, 1967, 6, 400-407.
2.
Lefkowitz, M., Blake, R.R., & Mouton, J.S.Status factors in pedestrian violations of traffic signals. Journal of Abnormal and Social Psychology, 1955, 51, 704-706.