Psychosocial UFO hypothesis

In ufology, the psychosocial hypothesis (PSH), argues that at least some UFO reports are best explained by psychological or social means. It is often contrasted with the better-known extraterrestrial hypothesis (ETH), and is particularly popular among UFO researchers in the United Kingdom, such as David Clarke, Hilary Evans, the editors of Magonia magazine, and many of the contributors to Fortean Times magazine.

Source: Wikipedia — Psychosocial UFO hypothesis (CC BY-SA 4.0)