The Erotic Response and Orientation Scale is dated, yet touted as an overlooked and nuanced contribution to the study of human sexuality in newer research. Though developed in part to counteract problems with the Kinsey Scale Test, Kinsey was, contrary to popular belief, not a behaviorist, but granted that sexuality is much broader than simply lived behavior.

The Erotic Response and Orientation Scale does not address all possible sexual or gender identities and does not purport to accommodate respondents who identify as non-binary. The Erotic Response and Orientation Scale (EROS) is a classical index and instrument for measuring heterosexual and homosexual behavior, bisexuality, and asexuality. The original research was provided by Michael Storms in affiliation with Kansas University. The IDR-SOT© is the property of IDR Labs International.