Implicit bias tests are a pseudoscience. This shouldn't surprise anyone who is metascientifically knowledgeable, because big, decades-long pseudoscientific lumps of shit like it are common in the "sciences". In fact, about two thirds of medicine, psychology, and many other fields are irreproducible trash. And, if that wasn't bad enough, that irreproducible trash is easy even for a layman to quickly identify, which means most of the scientists in these fields are either corrupt or braindead or some combination of the two.