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

 Person

Found in 253 Collections and/or Records:

30 (38), Thomson to Ledermann, 17 Jun 1938

 Item
Identifier: Coll-1064/63
Scope and Contents Thomson asks Ledermann to find the latent roots of a matrix, which he reproduces, in order to check its principle axes.
Dates: 17 Jun 1938

31 (37), Thomson to Ledermann, 14 Nov 1937

 Item
Identifier: Coll-1064/30
Scope and Contents Thomson thanks Ledermann for his letter regarding minimum trace and minimum Thorstone [sic] rank which showed they do not always occur together, but Thomson argues that they usually do.

He discusses matrices, referring to the work of Heywood, Spearman, and Thurstone; as well as an article that he would like to write.
Dates: 14 Nov 1937

31 (38), Thomson to Ledermann, 21 Jun 1938

 Item
Identifier: Coll-1064/64
Scope and Contents Thomson compares the latent roots Ledermann has calculated with his own, referring to Hotelling's iterative process.
Dates: 21 Jun 1938

32 (37), Thomson to Ledermann, 19 Nov 1937

 Item
Identifier: Coll-1064/31
Scope and Contents Thomson has written the letter on a sheet containing a short note of Ledermann's regarding a volume of Pliny’s letters.

He discusses the connection between the Heywood case and Ledermann's condition, illustrating this with working, and refers to Spearman's commonalities.
Dates: 19 Nov 1937

32 (38), Thomson to Ledermann, 25 Jun 1938-1 Jul 1938

 File
Identifier: Coll-1064/65
Scope and Contents In the first letter dated 25 Jun 1938, Thomson thanks Ledermann for his corrections. He discusses unimodality and bimodality, vectors, and the distributions of loadings, referring to the work of Thurstone and Woodrow, as well as Ledermann's own method for finding the distribution of loadings. He also asks Ledermann if he has heard anything about his Home Office application. In the second later, dated 1 Jul 1938, Thomson asks Ledermann which part of the summer he is to have off, and...
Dates: 25 Jun 1938-1 Jul 1938

33 (37), Thomson to Ledermann, 8 Dec 1937

 Item
Identifier: Coll-1064/32
Scope and Contents Thomson discusses his travels to London and the Lake District; Ledermann's enrolment as a DSc student; Ledermann's papers on automorphic matrices and boundary conditions respectively, and potential publishers for these; and hierarchical Heywood cases.
Dates: 8 Dec 1937

33 (38), Thomson to Ledermann, 26 Jun 1938-4 Jul 1938

 File
Identifier: Coll-1064/66
Scope and Contents In the first letter, dated 26 Jun 1938, Thomson explains what he means by a profile correlation, and asks Ledermann to help him solve his difficulties with this, illustrating with matrices and calculations.

In the second letter, dated 4 Jul 1938, Thomson tells Ledermann that he is sorry to hear of his Father's accident, but hopes that he will enjoy the colloquium at St Andrews and visiting his Brother in Wales.
Dates: 26 Jun 1938-4 Jul 1938

34 (37), Thomson to Ledermann, 18 Dec 1937

 Item
Identifier: Coll-1064/33
Scope and Contents Thomson informs Ledermann that his article can be printed in Sociometrika or Psychometrika. He is unsure if the former exists and thinks it may be a typing error. Thomson mentions that he has many letters and manuscripts of Ledermann still to acknowledge. These cover topics such as boundary conditions, and Ridley Thomson's criterion. Thomson lists the letters and manuscripts with brief comments. He also discusses the...
Dates: 18 Dec 1937

34 (38), Thomson to Ledermann, 28 Jun 1938-16 Jul 1938

 File
Identifier: Coll-1064/68
Scope and Contents In the first letter, dated 28 Jun 1938, Thomson discusses binomial distribution, referring to Thurstone’s Primary Mental Factors.

In the second letter, dated 16 Jul 1938, Thomson congratulates Ledermann on his new post, telling him he will miss him but wishing him good luck. He advises him to speak to the Senate regarding his DSc and try to submit in December, and tells him he hopes they can still write to one another.
Dates: 28 Jun 1938-16 Jul 1938

35 (38), Thomson to Ledermann, 26 Jul 1938

 Item
Identifier: Coll-1064/69
Scope and Contents Thomson mentions Psychometrika articles, though he does not give titles or dates. He refers to offprints for Ledermann's Univariate note, and for a multivariate piece, neither of which he has received the offprints for.
Dates: 26 Jul 1938