Strength

• One strength is that Milgram's research has good external validity.
• Milgram argued that the lab based relationship between ppt and experimenter reflected wider real-life authority relationships.
• Hofling(1966) found that nurses on hospital wards were highly obedient to the unjustified demands of doctors.
• Therefore, processes of obedience in Milgram's study can be generalised due to how authority relationships exist in real life.