This presentation discusses social comparison theory and the types of social comparisons. It introduces social comparison theory, proposed by Leon Festinger, which is the tendency for people to compare themselves to others in their social group. There are two types of social comparisons: upward comparisons, which involve comparing oneself to someone perceived as better, and downward comparisons, which involve comparing oneself to someone perceived as worse. The presentation notes that both types of comparisons can have positive or negative effects and discusses examples of each. It also discusses the role social media plays in enabling social comparisons and how comparing one's real life to an idealized version of others' lives online can negatively impact self-esteem.