RT Article T1 Protecting one's identity of changing one's mind? The social context of cognitive dissonance generation and reduction JF Swiss journal of psychology VO 53 IS 4 SP 202 OP 209 A1 Clémence, Alain LA English YR 1994 UL https://krimdok.uni-tuebingen.de/Record/1639455671 K1 Dissonanztheorie K1 Einstellungsänderung