Key points are not available for this paper at this time.
This paper is intended as a digest of the first of three series of psychometric assessment histories appearing in the BPS quarterly periodical Assessment & Development Matters between Vol. 6(2014), 2, 16–18 and Vol. 8(2016), 3, 24–29 and a postscript McCredie (2016).
Hugh McCredie (Thu,) studied this question.