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Correspondence between Thomson and Derrick Lawley regarding differences in IQ between two successive generations, 21 Oct 1945 - 23 Oct 1945

Identifier: Coll-1310/1/1/10

Scope and Contents

Discusses the work of Fraser Roberts and R S Fisher with regards to calculating the fall in IQ per generation, specifically the problems Thomson sees in the data being collected from one generation only. Lawley agrees with this, and expounds upon the problem further.

Thomson also asks Lawley to check the calculations of Burt on the Sutherland and Thomson data, with Lawley subsequently highlighting their inaccuracies.

Thomson's letter is written on the reverse of 7 copies of a circular from the Edinburgh Provincial Committee for the training of teachers, Moray House Training College, regarding compulsory training for teachers.


  • Creation: 21 Oct 1945 - 23 Oct 1945


Language of Materials


Conditions Governing Access



2 letters (9 leafs, 9 sides)

Physical Location


Repository Details

Part of the University of Edinburgh Library Heritage Collections Repository

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