https://theconversation.com/measuring-the-implicit-biases-we-may-not-even-be-aware-we-have-74912?utm_campaign=Echobox&utm_medium=Social&utm_source=Facebook#link_time=1509379696

In many cases, people don’t know they have these implicit biases. Much like we cannot introspect on how our stomachs or lungs are working, we cannot simply “look inside” our own minds and find our implicit biases. Thus, we can only understand implicit bias through the use of psychological measures that get around the problems of self-report.