, Volume 13, Issue 2, pp 69–77 | Cite as

A binomial method for analyzing psychological functions

  • J. A. Gengerelli


On the basis of the assumption that distributions of scores on psychological functions are generated by a finite number of equally probable factors, a method is presented which yields the number of factors and their probabilityp. The statisticsβ1 andβ2 are used for this purpose. An experiment utilizing a code-transcription test is described in which the method was employed to analyze performance at several stages in the learning process.n was found to be 10 for the first 2 minutes of practice and 19 for the second 2 minutes. For the third, fourth, and fifth 2-minute periods, no value could be obtained owing to the pronounced leptokurtosis of the distributions. The first 3 periods of practice, when lumped together, gave ann of 33. It is suggested that the method offers a means of comparing the variability and “complexity” of otherwise non-comparable psychological functions. The use of the method as an instrument of investigation in the field of factor analysis is described.


Public Policy Learning Process Finite Number Statistical Theory Psychological Function 
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Copyright information

© Psychometric Society 1948

Authors and Affiliations

  • J. A. Gengerelli
    • 1
  1. 1.University of CaliforniaLos Angeles

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