Social psychology of humor:
investigates situations in which humor emerges, as well as its effects and functions in the context of social interactions (Martin 2007).
Organizational psychology of humor:
investigates the same as the social psychology of humor, but within a work context and relates to other established organizational variables and research traditions (e.g. leadership, team, employee engagement; Pluta 2014).
Psychology of individual differences, personality and humor:
investigates how people appreciate and produce different kinds of humor, how they use humor differently, and how conscious they are about using humor. It is often related to bigger models and theories of personality and cognitive styles (Martin et al. 2003).
Intercultural studies of humor:
is large field of research efforts, with studies representing all the traditions but with the cross-cultural comparison element (i.e. comparing individual differences in one culture to another (e.g. Kazarian & Martin 2004, Murata 2014)); furthermore, it also studies focusing explicitly on the cross-cultural dimension of humor, i.e. humorous interactions between people or groups representing different cultures (e.g. studies of how non-native speakers function in the English joking-culture (e.g. Bell & Attardo 2010, Bell 2007, Rocke 2015)).