Carol Tavris is the author of the amazing social cognitive psychology book Mistakes Were Made (But Not By Me).
This book comes highly recommeded by Neuromarketing expert Russell Wright of Theme Zoom LLC and is the cornerstone of his work in Deconfabularianism and Epimemetics, which is part of what he describes as The Road to In-Doubten-Ment. Willingness to be wrong is a necessary part of inverting the Sisyphus Slope, and is required for success in business as well as personal relationships.
An excellent dramatization of cognitive dissonance and slippery slope prosecution (described by Carol Tavris in her book) is Star Trek: Next Generation: Season 4: Episode 21 The Drumhead.
We STRONGLY reccommend that you read this book (Mistake Were Made Not By Me) before entering into situations that call for you to make judgement calls of ANY kind.