the virus. john drury, you are a social psychology professor - the virus. john drury, you are a social psychology professor at l the virus. john drury, you are a i social psychology professor at the university of sussex this phrase of groupthink is one we ve heard a lot in the past. what does it mean and what s the evidence for it. 7 it s one of those psychology terms that s it s one of those psychology terms that s become popular, and we did hear it that s become popular, and we did hear it a that s become popular, and we did hear it a lot that s become popular, and we did hear it a lot injune when dominic cummings appeared as a witness for one of cummings appeared as a witness for one of the cummings appeared as a witness for one of the committees he said it 15 times, one of the committees he said it 15 times, and it was picked up then too. 15 times, and it was picked up then toe what 15 times, and it was picked up then too. what people often mean by it and what