8 Es ran 127 Ss in a 1- and/or 4-member group situation to test their aggressive attitudes. Each S was handed a description of the first Milgram study and had to give 2 estimations: the percentage of the German adult federal citizens who would give shocks up to 450 volts and the voltage up to which S would apply shocks. Two E-groups were given opposite information on the results to be expected. Group A should obtain higher ratings under coaction for both estimations. Group B should expect the reverse result. While our hypothesis could only be confirmed for Group A, various E-effects could be demonstrated in both groups.
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