This document discusses social psychology concepts related to attitude formation and change, including cognitive dissonance theory. It notes that cognitive dissonance occurs when people hold two contradictory cognitions or beliefs at the same time, creating unpleasant tension that they seek to resolve, such as by changing their attitude. The document also discusses factors that make attitudes most or least resistant to change, as well as methods people use to resolve cognitive dissonance like changing their attitude, increasing consonant elements, or reducing importance of elements. It provides examples of obedience studies by Milgram and conformity research by Asch.