The History Channel recently ran a series called Your Bleeped-Up Brain, and if you can get past that staggeringly stupid title, there are some interesting tidbits to be found about how our minds work.
In particular, I caught a snip the other day about how humans define "truth." The main salient points: first, we are wired to believe the first information we see, hear, or learn; second, it is incredibly difficult for us to unlearn that "first" and replace it with new information. This is essentially the "primacy effect," where we are inherently more apt to trust, accept, and maintain belief in the first thing we hear or read. Add this as well: we are far more apt to believe information that confirms feelings we already hold, regardless of the veracity or validity–or even logic–of that information.
I have been fighting a slow and constant battle within my district to help implement our new evaluation system (TPEP, though I hate acronyms) and empower teachers to understand and use the framework not just when thinking about their performance review but moreso when thinking about their own practice. In our district of roughly 400 certificated staff, it is obviously difficult to communicate to everyone in a personal, meaningful, and clear way. It is also a challenge to accurately and authentically monitor what they really do and don't understand.
Because we are human beings, we often look to one another first for information, before digging into things such as legalese about what is actually policy. The clear problem with this? It is easier to chat in the staff room and spread hearsay than to actually look it up. Sadly, we're then more likely to use unsubstantiated hearsay as the foundation for our feelings and opinions–and then refuse to accept new information when confronted with fact that contradicts what we thought we knew.
Case in point: recently I was told that it states unequivocally in the state RCWs that teachers are required to compile an eight-section portfolio of evidence to support their performance on each of the eight state evaluation criteria (and in areas of focus, cross-referenced with framework elements). I know the law, and it states absolutely nothing that could even be stretched to construe such a directive. Yet, this colleague of mine was certain she was right and I was wrong. Why? She heard it from a friend who teaches in another district.