The impact of (i) social pressure and (ii) colour of clothing on participants’ crime judgements were examined. A total of 49 participants participated in small groups. They were read a crime report, and answered questions aloud about this report. Unknown to them, some group members were confederates and gave incorrect answers to some of the questions. In each session either one or four confederates were present who wore either dark or light clothing. Results revealed that participants gave numerous incorrect answers, with the most incorrect answers being given when (i) there were four confederates, and (ii) the confederates wore dark clothing.