The learning environment preferences: Exploring the construct validity of an objective measure of the Perry scheme of intellectual development. Journal of College Student Development, 30, 504-514. ↑ Quoted in Reshaping Teaching in Higher Education, A. Jenkins, R. Breen, R. Lindsay, [2001] Routledge, Abingdon UK. ↑ Drew S and Bingham R. The Student Skills Guide: Second Edition pp 282 -283 ↑ "William Perry'S Scheme Of Intellectual And Ethical Development". Cse.buffalo.edu.