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Psychometrika

, Volume 37, Issue 1, pp 93–97 | Cite as

The occurrence of an increase in correlation by restriction of range

  • Joseph Levin
Article

Abstract

Given three variables,x, y, z, univariate selection onx, usually reduces the correlationr y z . However, in some cases, whenr x y orr x z assumes extreme values,r y z may increase. This reversal is explained by comparison to the effects of suppressor variables and predictors of predictability.

Keywords

Public Policy Statistical Theory Suppressor Variable 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Ghiselli, E. E., Differentiation of tests in terms of the accuracy with which they predict for a given individual.Educational and Psychological Measurement, 1960,20, 675–684.Google Scholar
  2. Guilford, J. P.,Fundamental statistics in psychology and education. New York: McGraw Hill, 1956.Google Scholar
  3. Gulliksen, H.,Theory of mental tests. New York: Wiley, 1950.Google Scholar
  4. Lord, F. M. & Novick, R. M.Statistical theories of mental test scores. Reading, Mass.: Addison-Wesley, 1968.Google Scholar
  5. Thorndike, R. L.,Personnel selection. New York: Wiley, 1949.Google Scholar

Copyright information

© Psychometric Society 1972

Authors and Affiliations

  • Joseph Levin
    • 1
  1. 1.Tel-Aviv UniversityIsrael

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