The Forer Effect, identified by psychologist B.R. Forer, happens when someone accepts some general or vague description of their personality as being unique to them, even though the exact same description would apply equally well to everyone.In his experiment, Forer gave a personality test to his students and then,
The same experiment has been performed repeatedly through the decades in a vareity of contexts, and the responses continue to be highly positive. It seems to be a basis for understanding people's acceptance of things like astrology, graphology, divination and other pseudosciences.It is also known as Barnum Effect, personal validation effect, subjective validation effect.
The Forer effect has been known to be used heavily in horoscopes in various publications as a way to entice readers into believing in astrology and its powers of prediction.