Thoughts from a reflective educator.
Via the @BCAMT email list-serve:
"[T]here is an interesting (and disturbing) literature on situations in which information does not change prior biases or decisions. The word I have seen is 'motivated reasoning'.
...
There are a number of things which have been discovered over the years through research which are not entirely intuitive. In fact, many of the results that have been discovered are down-right odd.