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Image from page 281 of “Trade tests; the scientific measurement of trade proficiency” (1921)
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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

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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-

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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

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