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Thomson, Godfrey Hilton, Sir, 1881-1955 (psychologist and Bell Professor of Education, University of Edinburgh)


Found in 49 Collections and/or Records:

1 (38), Thomson to Ledermann, 1 Jan 1938

Identifier: Coll-1064/34
Scope and Contents Thomson asks Ledermann to explain an article of C Spearman's. The unnamed article is referred to in Spearman's The Abilities of Man, and regards the reversibility of proof of Spearman's tetrad criterion.

11 (38), Thomson to Ledermann, 27 Feb 1938-28 Feb 1938

Identifier: Coll-1064/44
Scope and Contents Thomson explores his discovery regarding correlation co-efficients, or what he refers to as profile correlations, in a doubly centred matrix in relation to Thurstone’s centroid process. He also refers to Ledermann's assertion regarding the approach of a powered matrix to rank one as the power rises, stating that he disagrees, and referring to the work of Burt. Also includes a post script which...

12 (38), Thomson to Ledermann, 1 Mar 1938

Identifier: Coll-1064/45
Scope and Contents Thomson refers to his previous letters regarding correlation co-efficients in a doubly centred matrix. He tells Ledermann he was wrong in some respects, and asks him further questions in relation to the work of Burt.

13 (38), Thomson to Ledermann, 3 Mar 1938-5 Mar 1938

Identifier: Coll-1064/46
Scope and Contents In his letter, dated 3 Mar 1938 and numbered 13 (38), Thomson thanks Ledermann for his previous letter, and responds to his points regarding the reciprocity of persons and tests, referring to Burt's statement that we can always deduce all we want to know about person-factors from an analysis into test-factors, or vice versa, and need only perform whichever analysis is convenient. Thomson disagrees with this, apart...

14 (37), Thomson to Ledermann, 14 Aug 1937

Identifier: Coll-1064/12
Scope and Contents Thomson refers to a proof or article which he had enclosed. This has not survived in the collection. He does not name the author, but suggests to Ledermann that he may want to contact him, either sending the letter by the fastest ship or communicating by cable, charging the costs to the Carnegie fund. He refers to his British Journal of Psychology article discussed previously; highlighting that he wishes it to be understood by less mathematical readers, and...

14 (38), Thomson to Ledermann, 6 Mar 1938

Identifier: Coll-1064/47
Scope and Contents Thomson comments briefly on Thurstone’s The Vectors of the Human Mind, pointing out that Thurstone uses a theorem proved by Burt. Thomson also refers Ledermann to articles he and Ledermann wrote for Psychometrika on boundary conditions, since this is something he wishes to write about in The Factorial Analysis of Human Ability. He informs Ledermann that he will be taking part in a discussion at...

15 (37), Thomson to Ledermann, 16 Aug 1937

Identifier: Coll-1064/13
Scope and Contents Thomson informs Ledermann that he has submitted his paper to the British Journal of Psychology, and has included a referral to a future article of Ledermann's.

15 (38), Thomson to Ledermann, 8 Mar 1938-9 Mar 1938

Identifier: Coll-1064/48
Scope and Contents Thomson discusses some areas of uncertainty he has regarding making back estimates of the scores z from the first few Hotelling factors, referring to Bartlett's estimates of the Thurstone common factors.

Thomson asks Ledermann whether the back estimates using the Hotelling method or Bartlett-Thurstone method are best. He has added a short post script at the end of his letter the next day stating M S Bartlett's method is best.

16 (37), Ledermann to Thomson, 18 Aug 1937

Identifier: Coll-1064/14
Scope and Contents Thomson tells Ledermann how pleased he is that he is that Ledermann is going to follow up his [Thomson's] paper for the British Journal of Psychology, and asks him to include material regarding multivariate selection. He talks about the various reading he has undertaken, referring to work by Bocher, Hotelling, and Turnbull; and discusses the connection between the correlation of orthogonal vectors produced by selection in the population,...

16 (38), Thomson to Ledermann, 9 Mar 1938

Identifier: Coll-1064/49
Scope and Contents Thomson informs Ledermann that Burt, Spearman, and Myers are to be the other speakers at the Royal Society discussion he is participating in, and that he has asked if Ledermann and Emmett may attend as guests.

He refers to a geometrical discussion of Bartlett's form of estimation which he originally sent with the letter for Ledermann's comments. This has not survived in the collection.