Strength: Results from field experiments support Milgram's findings. E.g. Hofling (1966) conducted a study in a hospital, nurses were phoned by "Dr Smith" asking that they give a drug to a patient, this went against hospital regulations because: nurses aren't supposed to take instructions over the phone, instructions from an unknown doctor, dosage of drug was twice that advised 21/22 nurses obeyed. Is a strength because field experiments showed that individuals obey orders from an authority figure. Showing that obedience to an authority figure occurs in real-life as Milgram's results indicated