Mirroring, or the chameleon effect, is the behavior in which one person subconsciously imitates the gesture, speech pattern, or attitude of another. Mirroring often occurs in social situations, particularly in the company of close friends or family, often going unnoticed by both parties. The concept often affects other individuals' notions about the individual that is exhibiting mirroring behaviors, which can lead to the individual building rapport with others.
Mirroring is distinct from conscious imitation under the premise that while the latter is a conscious, typically overt effort to copy another person, mirroring is unconsciously done during the act and often goes unnoticed.