Parasocial interaction (PSI) refers to a kind of psychological relationship experienced by an audience in their mediated encounters with performers in the mass media, particularly on television and on online platforms. Viewers or listeners come to consider media personalities as friends, despite having no or limited interactions with them. PSI is described as an illusory experience, such that media audiences interact with personas (e.g., talk show hosts, celebrities, fictional characters, social media influencers) as if they are engaged in a reciprocal relationship with them. The term was coined by Donald Horton and Richard Wohl in 1956.

Many parasocial relationships fulfill the needs of typical social interaction, but potentially reward insecurity. Many who possess a dismissive attachment style to others may find the one-sided interaction to be preferable in lieu of dealing with others, while those who experience anxiety from typical interactions may find comfort in the lives of celebrities consistently being present. Additionally, whatever a celebrity or online figure may do can provoke emotional responses from their audiences—some even going as far as suffering from negative feelings because of it.

Parasocial interaction (PSI) refers to a kind of psychological relationship experienced by an audience in their mediated encounters with performers in the mass media, particularly on television and on online platforms. Viewers or listeners come to consider media personalities as friends, despite having no or limited interactions with them. PSI is described as an illusory experience, such that media audiences interact with personas (e.g., talk show hosts, celebrities, fictional characters, social media influencers) as if they are engaged in a reciprocal relationship with them. The term was coined by Donald Horton and Richard Wohl in 1956.