In this seminar Paul E Newton, Professor of Education Assessment University of London, Institute of Education talks about how scholars have been trying to agree on a meaning of validity.  Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

Doing practical work: rationality and heuristics in teaching

Public seminars from the Department of Education. 
Oxford has been making a major contribution to the field of education for over 100 years and today this Department has a world class reputation for research, for teacher education and for its Masters and doctoral programmes.

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