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Image from page 281 of "Trade tests; the scientific measurement of trade proficiency" (1921) Continuous Level Measurement
Image by Internet Archive Book Images Identifier: tradetestsscient00chap Title: Trade tests; the scientific measurement of trade proficiency Year: 1921 (1920s) Authors: Chapman, James Crosby, 1889- Chapman, Daisy Rogers, Mrs Subjects: Ability Industrial efficiency Occupations Publisher: New York, H. Holt and company Contributing Library: The Library of Congress Digitizing Sponsor: The Library of Congress View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Text Appearing Before Image: by several examiners, thereby greatly increasing the reliabilityof the judgment. The product test is also far superior to theprocess test from the standpoint of administration. The processtest calls for continuous observation by the examiner, his timeis apt to be taken up exclusively by one tradesman, whereas inthe product time test, the examiner, after assigning the taskand distributing the material and tools, has merely to notethe time at which the candidate hands in the finished product.Consequently many examinations can be given simultaneously.It may be urged by some readers that an unduly fine line hasbeen drawn between the process and the product form of ex-amination. There is, in the last analysis, little distinction be- 270 TRADE TESTS tween the two. In many cases they are so interrelated thateven for purposes of presentation there are certain dangers inmaking such a clear differentiation. Whenever the final productof an operation, together with the time taken for its perform- Text Appearing After Image: Sample page of performance test in operation (Lineman). ance, is judged, this judgment applies also indirectly to theprocess leading to the product. The more this relationship is analyzed, the clearer becomesthe fact that the product-tune test covers almost everythinginvolved in a process test. Assumuig. therefore, the general addsabihty of using theproduct-time test, the question as to which operation shouldbe chosen depends on a number of factors. Among these thefollowing need special mention. PERFORMANCE TEST METHOD 271 1. The operation should be sufficiently exact, so that timeand product admit of accurate standardization, thereby en-abling objective judgments to be made. 2. The combined ratings of time and quaHty of product shoulddifferentiate between men of different levels of trade abihty. 3. The task should be of such a nature as to command therespect and establish the confidence of the tradesman. 4. Equipment, material and tools must be reduced to thesmallest practical quant Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.

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