AO3. Moscovici has been criticised for breaching ethical guidelines during his study. He deceived his participants, they were being told that they were taking part in a colour perception test, when it was an experiment on minority influence. This means that Mosovici did not gain informed consent. Although this is unethical, the study required this in order to achieve valid results, in order to avoid demand characteristics. This ethical issue could be dealt with by the means of a debrief