The schemes themselves slightly differ, but all centre around versions of what at Harvard University has been developed as the Implicit Association Test (IAT). Since it went on the internet in 1998 more than 30 million people have taken the test on the Harvard website to discover whether or not they harbour unconscious bias.17 What the IAT attempts to work out is who individuals think of as being in an ‘in group’ and who they might see as being in an ‘out group’. Cited thousands of times in academic papers, it has undoubtedly become the most influential measure of ‘unconscious bias’.
