2 ideas from Bertram R. Forer, each explained in a minute and credited to the original work. Free on Savvy.
In 1948, Bertram Forer gave students a personality test, then handed every single one of them an identical, vague profile lifted from a newsstand astrology column — and asked them …
— Bertram Forer, The Fallacy of Personal Validation: A Classroom Demonstration of Gullibility
In 1948, Bertram Forer gave students a 'personalized' personality assessment that was actually identical for everyone, built from vague horoscope-like statements. Students rated it…
— Bertram R. Forer, The Fallacy of Personal Validation: A Classroom Demonstration of Gullibility