Baron-Cohen has faced criticism by some for his "empathizing-systemizing theory", which states that humans may be classified on the basis of their scores along two dimensions (empathizing and systemizing); and that females tend to score higher on the empathizing dimension and males tend to score higher on the systemizing dimension. Feminist scientists, including Cordelia Fine, neuroscientist, Gina Rippon, and Lise Eliot have opposed his extreme male brain theory of autism, calling it "neurotrash" and neurosexism"." Rippon also argues against using "male" and "female" for describing different types of brains, and that brain types do not correspond to genders.