American psychologist Howard Gardner of Harvard University described the theory of multiple intelligences in his 1983 book "Frames of Mind". Its main idea: there is no single intelligence that an IQ test measures. Everyone has their own mix of abilities, and you can be strong with words, music, people or your hands.
Gardner first described seven intelligences, later added the naturalistic one and discussed an existential one. The MansApp test has nine scales with three statements each.