20 obedient PP were selected from Milgram's study and 20 defiant PP. Each completed an MMPI scale questionnaire and the California F scale.
Findings and conclusions
Findings- there was little difference obedient and defiant on MPPI scale but there was different on California F scale, there was a higher level of authoritarianism among obedient PP than defiant PP.
Conclusion- obedient people more likely to display the characteristics.
Evaluation: weaknesses - Elms and Milgram

Milgram believed in situational and not dispositional factors.
Less educated people are more likely to have authoritarian personality
Use of self-report scale so social desirability bias is introduced.
It doesn't explain whole social groups can be prejudice so not all people will have authoritarianism personality.