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  • 1975-1979  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 31 (1978), S. 0 
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: The thesis of this paper is that many proposed moderators in personnel psychology are probably illusory, having been created solely by belief in the law of small numbers. Evidence is presented that race as a moderator of test validity is one such illusory moderator. In addition, a model for validity generalization is described which, in addition to eliminating the need for criterion-related validity studies under certain circumstances, strongly calls into question the idea that situations moderate test validity, i.e., the traditional doctrine of situational specificity of test validities. Calculations are presented which show that adequate statistical power in moderator research requires much larger sample sizes than have typically been employed. This requirement is illustrated empirically using validity data for the Army Classification Battery for 35 jobs and 21,000 individuals. These analyses show that (1) even when a moderator is generally assumed to be large, large samples are required to gauge its effect reliably and (2) large sample research may show that moderators that appear plausible and important a priori are nonexistent or trivial in magnitude. The practice of pooling across numerous small sample studies to obtain statistical power equivalent to that of large sample studies is recommended. In light of the evidence that many proposed moderators may not exist, the authors hypothesize that the true structure of underlying relationships in personnel psychology is considerably simpler than personnel psychologists have generally imagined it to be.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: The adverse impact of a content-valid job sample test of metal trades skills was compared to that of a well-constructed content-valid written achievement test for the same technical area. The adverse impact of the former was considerably less. In addition, both minority and majority examinees saw the job sample tests as significantly fairer, clearer, and more appropriate in difficulty level. These differences were not only statistically significant but also quite large. These were no significant differences between minority and majority attitudes toward either test. In light of these results, it is suggested that industrial psychologists should explore more fully the potential of performance testing.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Personnel psychology 32 (1979), S. 0 
    ISSN: 1744-6570
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Psychology
    Notes: Using an improved version of the Bayesian validity generalization model presented in Schmidt and Hunter (1977), this study showed that most of the between-study variation in observed validity coefficients of various aptitude and ability tests for two types of clerical work and for the job of first-line supervisor is artifactual in nature. These results cast additional doubt on the traditional belief that employment test validities are situationally specific. In addition, the results showed that generalization of validities to new settings was justified even where the hypothesis of situational specificity could not be rejected under the standards used in this study. Implications for the use of aptitude and ability tests in selection and for theory development in industrial-organizational psychology are discussed.
    Type of Medium: Electronic Resource
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  • 4
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    Unknown
    Chicago : Periodicals Archive Online (PAO)
    Journal of marketing research. 12:3 (1975:Aug.) 347 
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