A strength of Milgram’s study is that it is supported by real-world evidence, such as Bickman’s (1974) field experiment on the power of uniform. In this study, Bickman had three experimenters dressed in different outfits: a security guard, a milkman, and a civilian. Participants were asked to follow various instructions, such as picking up a bag or giving money to the experimenter. The results showed that participants were more likely to obey the security guard (uniformed) than the milkman or civilian. Specifically, 80% of people obeyed the security guard compared to 40% when the person was dressed casually. This supports Milgram’s findings, showing that uniform, as a visible symbol of authority, increases obedience in both laboratory and real-life settings, reinforcing the idea that authority figures are more likely to be obeyed when wearing uniforms.