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Glenapp Ayrshire Scotland

Subject Source: Local sources

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.
Dates: 1 Jan 1938

2 (38), Thomson to Ledermann, 10 Jan 1938

Identifier: Coll-1064/35
Scope and Contents Thomson refers to a letter he was planning on sending to Nature, which was originally enclosed but has not survived in the collection. He asks Ledermann to check the letter, and post it if it is correct.
Dates: 10 Jan 1938

4 (39), Thomson to Ledermann, 1 Aug 1939

Identifier: Coll-1064/84
Scope and Contents Thomson informs Ledermann that he has read through his paper and recommends the Edinburgh Royal Society as the best place to try for publication. He refers to a misprint in Ledermann's manuscript and offers a correction. Thomson asks Ledermann if he still has the calculating machine, and if it would be possible for him to undertake some calculations for an experiment in Scotland regarding performance tests, and referring to Thurstone’s centroid analysis. He assures him that any work...
Dates: 1 Aug 1939

5 (39), Thomson to Ledermann, 10 Aug 1939

Identifier: Coll-1064/85
Scope and Contents Thomson advises Ledermann on how he can shorten his manuscript, and offers to send it to the Royal Society in Edinburgh. Thomson discusses the calculations referred to in his previous letter, suggesting that Mr Kendal of the Agricultural and Fishes may be able to help. He informs Ledermann that the calculations are two Thurstone centroid analyses, one on 441 boys, the other on 430 girls, all Scottish children born on the 1st of Feb,...
Dates: 10 Aug 1939

6 (39), Ledermann to Thomson, 14 Aug 1939

Identifier: Coll-1064/86
Scope and Contents Thomson asks Ledermann to do nothing for the time being with the calculations referred to in his previous correspondence, since he thinks there are potential discrepancies to be checked beforehand.
Dates: 14 Aug 1939

7 (39), Ledermann to Thomson, 24 Aug 1939

Identifier: Coll-1064/87
Scope and Contents Thomson tells Ledermann he is glad Dr Comrie [?] is interested in the work referred to in his previous letters regarding children born in Scotland on the 1st of Feb, May, Aug, and Nov of 1926, but mentions again that errors in the original calculations mean the further calculations to be undertaken will have to be postponed.
Dates: 24 Aug 1939

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...
Dates: 27 Feb 1938-28 Feb 1938

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.
Dates: 1 Mar 1938

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...
Dates: 3 Mar 1938-5 Mar 1938

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...
Dates: 14 Aug 1937