Culture fair IQ tests were first developed in 1936. https://en.m.wikipedia.org/wiki/Raven%27s_Progressive_Matrices https://en.m.wikipedia.org/wiki/Raven%27s_Pr

Culture fair IQ tests were first developed in 1936. https://en.m.wikipedia.org/wiki/Raven%27s_Progressive_Matrices https://en.m.wikipedia.org/wiki/Raven%27s_Progressive_Matric... > All of the questions on the Raven's progressives consist of visual geometric design with a missing piece. The test taker is given six to eight choices to pick from and fill in the missing piece.