Invalidating environment definition
They were taught at an early age that their interpretations of and feelings about the things around them were bad and wrong.
They learned that certain feelings weren't allowed.
In abusive homes, they may have been severely punished for expressing certain thoughts and feelings.
When your awareness rises, you'll begin to notice such comments on a regular basis. We wonder if there is something wrong with us for feeling how we do.
Invalidation is to reject, ignore, mock, tease, judge, or diminish someone's feelings.
This implies that there is something wrong with us because we aren't like everyone else; we are strange; we are different; we are weird. The more different from the mass norm a person is, for example, more intelligent or more sensitive, the more he is likely to be invalidated.
To adapt to this unhealthy and dysfunctional environment, the working relationship between his thoughts and feelings becomes twisted.
His emotional responses, emotional management, and emotional development will likely be seriously, and perhaps permanently, impaired.
It seems fair to say that with enough invalidation, one person can figuratively, if not literally, drive another person crazy.
This is especially possible, I believe, in the case where one person has long-term power over another.