strength of milgram to do with research support
Research support- Bickman's field experiment in NYC
Demonstrated the influence of situational variables on obedience (uniform), he had 3 confederates dressed in 3 diff outfits- a jacket and tie, a milkman's outfit and a security guards uniform.
They stood in the street asking passer-bys to perform tasks such as picking up litter. People were twice as likely to obey the security guard than the one dressed in jacket and tie.
This supports the conclusion that uniform conveys authority and its a situational factor that influences obedience