Procedures in employment psychology

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Monograph

Identifikator:: 173623112X

URN:: urn:nbn:de:zbw-retromon-112923

Document type:: Monograph

Author:: Bingham, Walter Van Dyke http://d-nb.info/gnd/123042593; Freyd, Max

Title:: Procedures in employment psychology

Place of publication:: Chicago & New York

Publisher:: Shaw

Year of publication:: 1926

Scope:: XI, 269 S

Digitisation:: 2020

Collection:: Economics Books

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Document type:: Monograph

Structure type:: Chapter

Title:: IX. Rating scales

Collection:: Economics Books

EMPLOYMENT PSYCHOLOGY of the rater in preparing his master scales. Raters differ considerably among themselves in judging men by this method. Some of them tend to ignore the key men entirely in making their ratings and fall back upon their general conceptions of excellence in the ability in question. For an excellent critical analysis of this form of rating scale, see Rugg (156). The scale of alternatives or two steps. The judgment is given in the form of a Yes or No answer to the question: “Does the man possess this ability?” The difficulty with this simple method is that most abilities are not distributed in this all-or-none way. Abilities more often are found to be distributed among people in general in accordance with the normal probability curve. In other words, most people have neither a very small amount nor a very large amount of an ability. The judge finds himself unable to make satisfac- tory or accurate decisions regarding these people who do not deviate greatly from the average in this ability. Per cent scales. The judge rates each man in terms of per cents much as he would mark an examination paper, on the assumption: that 100% is the maximum amount of the ability that any man can possess. This implies a finer dis- crimination than is possible or desirable. Moreover, two raters can rarely be found who agree on how much 100% of the ability is, or 80%, or 50%. They really use different measuring sticks. Per cent scales sometimes require the judge to estimate the per cent of the general population which in his opinion this man would excel in the ability. Multiple-step scales. The judge indicates his estimate of the amount of the ability each man possesses by checking one of a series of symbols. In the following scales, a plus sign indicates a high degree of the ability in question and a minus sign a deficiency in the ability. The meaning of the other symbols is obvious. 126

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