Author: Jaager, Johan Jacob de.
Title: Origins of psychometry: Johan Jacob de Jaager student of F.C. Donders on 'Reaction time and mental processes' (1865).
Description: Nieuwkoop: B. de Graaf, 1970; 27(+13+)54+30pp., facsimile reproduction, bl-wh illustrations, footnotes, bibliography, 8vo, boards. V. good copy. Translated and edited by Josef Brozek and Maarten S. Sibinga. ¶ with a complete facsimile of the original Dutch text and translation into English. Vol. XVII in the series Dutch classics in history of science, published under the supervision of the Netherlands Society for the History of Medicine, Mathematics and Exact Science, in a limited edition of 500 copies. The text is the PhD thesis of medicine by De Jaager at the University of Utrecht in 1865.

Keywords: dissertatie geneeskunde, gesch. medical history psychobiologie