A Rationale and Test for the Number of Factors in Factor Analysis.

@article{Horn1965ARA,
  title={A Rationale and Test for the Number of Factors in Factor Analysis.},
  author={John L Horn},
  journal={Psychometrika},
  year={1965},
  volume={30},
  pages={179-85}
}
It is suggested that if Guttman's latent-root-one lower bound estimate for the rank of a correlation matrix is accepted as a psychometric upper bound, following the proofs and arguments of Kaiser and Dickman, then the rank for a sample matrix should be estimated by subtracting out the component in the latent roots which can be attributed to sampling error, and leastsquares "capitalization" on this error, in the calculation of the correlations and the roots. A procedure based on the generation… CONTINUE READING
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