Emotional contagion represents a social phenomenon that occurs when a connection is established between two individuals, it is a slight manifestation that consists in the occurrence of the same shared emotion in the context of relationships. In the last years it has been studied and introduced in many research papers: the nearest declination of this is represented by applications and technologies of emotion recognition, trough that it is possible to study the phenomenon in a scientific and less subjective way producing experimental datasets. In this scenario methods and applications of Artificial Intelligence could help to handle this amount of data and their classification tasks may give a good help for the researchers and experiments on the deep comprehension and several ways of manifestations of emotional bonds among individuals.