Glen volunteers his time at an animal shelter for a few hours a week, walking the dogs and cleaning up the mess around their kennels. karla has a part-time job at the shelter, and she gets paid to do the same dirty work. according to cognitive dissonance theory, who will be happier about cleaning up after the dogs?

In this case according to cognitive dissonance theory which states that dissonance happens when person has two contradictory beliefs or values and according to that Glen would be happier as he is doing the cleaning because he wants to as opposed to Karla who does it in order to get paid and would not be doing it otherwise.