Nope, I meant item response theory: https://en.wikipedia.org/wiki/Item_response_theory https://en.wikipedia.org/wiki/Item_response_theory It's a much, much bet

Nope, I meant item response theory: https://en.wikipedia.org/wiki/Item_response_theory https://en.wikipedia.org/wiki/Item_response_theory It's a much, much better method for designing and analysing questionnaires, and it is the foundation for all standardised testing (SAT, MCAT etc).