Social comparison theory and cognitive dissonance have been described by other psychologists as "the two most fruitful theories in social psychology." Cognitive dissonance has been variously described as "social psychology's most notable achievement," "the most important development in social psychology to date," and a theory without which "social psychology would not be what it is today." Cognitive dissonance spawned decades of related research, from studies focused on further theoretical refinement and development to domains as varied as decision making, the socialization of children, and color preference.