Jane Smiley at The Huffington Post wrote an interesting piece entitled Gaslight.
Gaslighting is a form of psychological abuse. It involves an increasing frequency of systematically withholding factual information from, and/or providing false information to the subject, having the gradual effect of making the victim anxious, confused, and less able to trust his or her own memory and perception.
Someone who is gaslighting might also look you in the eye and lie to you about you, or about something he knows you know is a lie.
From Jane Smiley’s article:
Knowing that we know what they know, they now tell us we’re crazy, that black is white and cats are dogs and John McCain is a maverick and Sarah Palin is a tax cutter (hear the one about Sarah P. leaving the town of Wasilla with 19 million dollars in long term debt? You did? No, you didn’t, darling. You must be imagining things)