References
- BICKMAN , L. , 1971 , The effect of another bystander's ability to help on bystander intervention in an emergency . Journal of Experimental Social Psychology , 7 , 367 – 379 .
- BICKMAN , L. ,GKEEN. S. K., 1977 , Situational cues and crime reporting do signs made a difference? Journal of Applied Social Psychology , 7 , 1 – 18 .
- FREEN. A., CHANDLER , P. , MOUTON. J., and BLAKE , R. , 1955 , Stimulus and background factors in sign violation . Journal of Personality , 23 , 499 .
- HAKRIS , M. , and MAYER , F. , 1973 , Dependency, threat and helping . Journal of Social Psychology , 90 , 239 – 240 .
- JOHANSSON, C,KUMAR. K., 1966 , Drivers and road signs A preliminary investigation of the capacity of car drivers to get information from road signs . Ergonomics , 9 , 57 – 62 .
- JOHANSSON , G. , and BACKLUND , F. , 1970 , Drivers and road signs . Ergonomics . 13, 749 – 759 .
- JOHNSTON. A. W., COLE. B. L., JACOBS , R. J. , and GIBSON , A. J. , 1976 , Visibility of traffic control devices Catering for the real observer . Ergonomics , 19 , 591 – 609 .
- LATANK , B. , and DARLEV , J. , 1970 , The Unresponsive Bystander Why Doesn't He Help? ( New York APPLETON-CENTURY-CROFTS ).
- ROSS , A. S. , 1971 , Effect of increased responsibility on bystander intervention The presence of children . Journal of Personality anil Social Psychology , 19 , 306 – 310 .