Who proposed competitor to Leon Festinger’s cognitive dissonance theory? October 18, 2021October 18, 2021 administrator Who proposed competitor to Leon Festinger’s cognitive dissonance theory?Daryl BemWell Done. Your Answer is Correct Keep it Up!Peter BurkeRobert CialdiniLeon Festinger Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Like this:Like Loading...