Deutsche Geschichte: Deutsche Geschichte

Deutsche Geschichte (Bd. 5, Hälfte 2)

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Multivolume work

Identifikator:: 1892063557

Document type:: Multivolume work

Author:: Lamprecht, Karl http://d-nb.info/gnd/118569015

Title:: Deutsche Geschichte

Place of publication:: Berlin

Publisher:: Gaertner

Year of publication:: 1891-

Collection:: Economics Books

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Volume

Identifikator:: 1892066122

URN:: urn:nbn:de:zbw-retromon-236166

Document type:: Volume

Author:: Lamprecht, Karl http://d-nb.info/gnd/118569015

Title:: Deutsche Geschichte

Volume count:: Bd. 5, Hälfte 2

Place of publication:: Berlin

Publisher:: Gaertner

Year of publication:: 1895

Scope:: XV, S. [359]-767

Digitisation:: 2022

Collection:: Economics Books

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Chapter

Document type:: Multivolume work

Structure type:: Chapter

Title:: Viertes Kapitel. Union und Liga. dreißigjähriger Krieg, westfälischer Friede

Collection:: Economics Books

39 6 APPENDIX Teachers’ College, are a great convenience for the beginner. A comprehensive treatment may be found in E. L. Thorndike’s “Mental and Social Measurements” and a very concise pres entation in Guy M. Whipple’s “Manual of Mental and Physi cal Tests ”, Vol. I. The practical psychologist will find that the slightly greater accuracy of the Pearson formula is more than compensated for by the greater flexibility and simplicity of the Spearman formula. It takes about six times longer to work out the Pearson formula than the Spearman formula (differences squared). In the treatment of employment tests it is much more important to obtain a large number of corre lations than to spend time trying to increase the refinement of a few. Two indices in which there is an inaccuracy of even 5 points have a greater practical significance than one correla tion which is absolutely accurate. Where groups of more than 20 rankings are to be compared, the Spearman “footrule” is sufficiently accurate, and extremely convenient. Extensive use of this formula was made in the course of the experiments described here. Where “ n” was less than 20, the longer Spearman formula was used. Probable errors are not given in connection with the indices of correlation in the body of the book for two reasons: first, because they would confuse the ordinary reader; secondly, the practical psychologist can tell almost at a glance what the probable error is. Knowing the number of individuals and the size of the correlation, the P. E. can easily be deduced. B. GENERAL PROCEDURE When an individual applies for work, his application is taken in the employment office and the information placed on a per manent employment record card. This card is then taken into the psychological examination room where it serves as an an nouncement of the applicant’s readiness to be examined. It also tells the examiner the kind of work for which the applicant is asking and gives him certain other essential information.

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