ao3

• strength- high control over variables

  altered one variable at a time and replicated, done in controlled environment so results were less likely to be affected by extraneous variables

  standardised procedures
• strength- other studies demonstrated importance of situational variable and obedience 


  Bickman had three confederates dress in different outfits, people were twice as likely to obey those dressed as security guard

  suggest people more likely to obey authority
• weakness- bias sample


  no diversity, all male.

  lacks population validity and can’t be generalised
• weakness- lacks realism 


  participant remained calm throughout, suggests they guessed the aim of the experiment, demand characteristics

  lacks internal validity