pˈɛɹi nˈaɪntiːnhˈʌndɹɪd sˈɛvənti pɹəpˈoʊzd ðæt kˈɑːlɪdʒ stˈuːdənts pˈæs θɹuː ɐ pɹɪdˈɪktəbəl sˈiːkwəns ʌv pəzˈɪʃənz ʌv ᵻpˌɪstɪməlˈɑːdʒɪkəl ɡɹˈoʊθ.
Perry (1970) proposed that college students pass through a predictable sequence of positions of epistemological growth.