Employment psychology

Bibliographic data

Monograph

Identifikator:: 1028407564

URN:: urn:nbn:de:zbw-retromon-47263

Document type:: Monograph

Author:: Link, Henry Charles; Thorndike, Edward L. http://d-nb.info/gnd/118802127

Title:: Employment psychology

Place of publication:: New York

Publisher:: MacMillan

Year of publication:: 1924

Scope:: 1 Online-Ressource (XII, 440 Seiten)

Digitisation:: 2018

Collection:: Economics Books

Usage license:: Get license information via the feedback formular.

Chapter

Document type:: Monograph

Structure type:: Chapter

Title:: Part I. Psychological tests

Collection:: Economics Books

MACHINE OPERATORS 117 This apparatus overcame, to a large extent, the difficul ties inherent in the Bogardus piece. In the first place, lt: was so constructed as to make possible a fairly ac curate performance. If the steel ball missed the slot and fell on the disk, it was prevented from falling off by a r aised rim. If the ball fell through the slot but missed the funnel, it was caught by a sort of apron which ex tended around the motor box. This apron was constructed at a pitch which quickly brought every steel ball to the feont of the machine into a little depression from which the operator had to pick it up. The apron was made of t'n, and was very noisy at the outset. However, it was later lined with heavy felt which subdued the noise very effectively. In the second place, this apparatus made it Possible to obtain an accurate score. Every successful at tempt of the operator to drop the ball through the fun- n el was recorded automatically, which meant, of course, that the failures were also registered. The latter was fecilitated by a Veeder star counter attached to one corner of the motor box in such a manner as to engage a pin pro jecting from the bottom of the revolving metal disk. This counter registered the revolutions of the disk and, at the Sa rne time, the number of opportunities for dropping the to the operator. The experimenter could there- his entire attention to the operator or person oeing tested. A third advantage was the ease with which the revolutions per minute of the disk could be governed fe contrast with the intricate and expensive control of the ®°gardus apparatus. Fortunately, the range of the motor ^as exactly suitable for this purpose. Moreover, extensive tr 'als showed that the disk would revolve at a constant s P e ed for eighteen minutes without the loss of a single Solution. After the eighteenth minute, the speed gradu- pus given fere devote

Access restriction

Copyright

fullscreen: Employment psychology

Monograph

Chapter

Table of contents

Download

Monograph

Chapter

This page

Image fragment

Citation links

Citation recommendation