As an educator, I had previously been exposed to the IAT assessments before and had completed several of them. I don't think that I had completed the Native or Asian IATs before. While taking these tests, I started to get tired, so I noticed that I made more errors in the later tests than in the earlier tests, just due to the fatigue of staring at my screen. My results weren't what I expected because they differed from my previous results on the tests. Can implicit bias change over time? This is an old article, but I know that there have been legitimate criticisms of the tool based on survey design and psychometrics-- https://www.apa.org/monitor/2008/07-08/psychometric https://digest.bps.org.uk/2018/12/05/psychologys-favourite-tool-for-measuring-implicit-bias-is-still-mired-in-controversy/