California Q-sort psychometrics.
California Q-sort psychometrics.
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加州 Q 排序心理测量学。
DOI:
10.1037/11748-006
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发表时间:
2008
影响因子:
2.4
通讯作者:
J. Block
中科院分区:
文献类型:
--
作者:
J. Block
Having provided the reasoning that leads to the decision for a prescribed, symmetrical, unimodal distribution, a next question is" How dependably can an appraiser describe a person through the established CQ procedure?" If the mental operations involved in formulating a CQ-sort are importantly aleatoric, the entire enterprise fizzles. First, then, some assurance of the substantiality or replicability of an evaluator's CQ-sort is required. Herewith is some accidental, unreproducible (even amusing) evidence on the reproducibility of a CQ-sort by an appraiser. Some years ago, at an assessment center, a research staff evaluated sets of persons over a series of weekends, grueling for both the assessees and the staff assessors. Immediately after a weekend, each staff member CQ described each of the 10 persons just observed. Seriously characterizing 10 different persons all in the course of a single day is a fatiguing, necessarily absorbing chore. By a slip of the mind, on one occasion a staff member completely forgot that he had already CQ-sorted a particular subject. Toward the end of a long day, he CQ-sorted that person a second time, for what he thought was his 10th CQ-sort of the day. On discovering his unnecessary duplication, he cursed tiredly because it meant he still had a last person to describe, who he then conscientiously CQ-sorted. The incident is anomalous and not planfully repeated. It is of unique interest because in a pure sense it meets the theoretical but unattainable requirement of test-retest reliability: reliability calculated without the passage of time and unaffected by residual memory. Certainly, the forgetful staff member would not have done the second (unnecessary) CQ-sort had he at all remembered his prior, hours-before appraisal. Additionally, this assessor had experienced much retroactive inhibition from his various intervening CQ-sorts of other assessees. It may safely be presumed, given the happenstance, that the forgetful assessor represents a" pure" test case for evaluating test-retest reliability: He had absolutely no memory of how, in the hours just before, he had placed the CQ descriptors in evaluating the person involved. How well did the two CQ-sorts of the same individual by the same but memoryless assessor correlate? The answer is an impressively high. 94. Of course, a single and so special an instance should not be incautiously generalized; one cannot know how other similarly forgetful assessors would have fared. It should be remembered, however, that the reproducibility or reliability of a recorded subjective impression does not necessarily mean the subjective impression has veracity; the reliability of an individual appraisal does not necessarily mean an accuracy of that appraisal. The plausibility of an individual appraisal depends on the larger, surrounding nomological framework of subjective impressions held by a broader base of individual appraisers. The plausibility of an individual appraisal is enhanced when multiple, operationally independent, diversely based subjective impressions of the same person prove to all manifest some sufficient degree of positive intercorrelation. Although by no means a foolproof credibility principle, the congruence among multiple, separate appraisals from diverse observers of the same person offers a persuasive inductive basis for considering their center of gravity--a composite--as having verisimilitude, a kind of truth. Long recognized has been the heightened cogency or wisdom afforded by judgments issuing from group composites. Agreement among a mixed bag of independent observers has proven empirically to be largely--if not always--creditable. A happy consequence of a …