Going with the definition that "Individual differences are the unique characteristics and traits, which distinguish us from others", would you consider sexual orientation an ID? When researching literature connected to the term "individual difference" sexual orientation does not come up very often in my experience. Mostly values, personality, intelligence or temperament. While sexual orientation does fit a broad definition of an ID, it does not seem to be often connected with the term. Do you consider sexual orientation an ID in the same category as personality or intelligence? Is it perhaps related to tradition, that we do not use ID that often as a descriptor of sexual orientation?