Thomson, Godfrey Hilton, Sir, 1881-1955 (psychologist and Bell Professor of Education, University of Edinburgh)
Found in 259 Collections and/or Records:
30 (38), Thomson to Ledermann, 17 Jun 1938
Thomson asks Ledermann to find the latent roots of a matrix, which he reproduces, in order to check its principle axes.
31 (37), Thomson to Ledermann, 14 Nov 1937
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.
31 (38), Thomson to Ledermann, 21 Jun 1938
Thomson compares the latent roots Ledermann has calculated with his own, referring to Hotelling's iterative process.
32 (37), Thomson to Ledermann, 19 Nov 1937
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.
32 (38), Thomson to Ledermann, 25 Jun 1938-1 Jul 1938
33 (37), Thomson to Ledermann, 8 Dec 1937
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.
33 (38), Thomson to Ledermann, 26 Jun 1938-4 Jul 1938
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.
34 (37), Thomson to Ledermann, 18 Dec 1937
34 (38), Thomson to Ledermann, 28 Jun 1938-16 Jul 1938
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.
35 (38), Thomson to Ledermann, 26 Jul 1938
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.
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