1. A comparison of the thurstone method of multiple factors with the hotelling method of principal components

   • C. H. McCloy
   • Eleanor Metheny
   • Virginia Knott

   OriginalPaper Pages: 61 - 67

2. Excitation of a chain of neurones

   • A. S. Householder

   OriginalPaper Pages: 69 - 73

3. Extensions of factorial solutions

   • Harry H. Harman

   OriginalPaper Pages: 75 - 84

4. The application of multiple factorial methods to the study of motor abilities

   • Claude Buxton

   OriginalPaper Pages: 85 - 93

5. A quantitative description of the stimulus

   • J. A. Lynch

   OriginalPaper Pages: 95 - 105

6. A contribution to the mathematical biophysics of psychophysical discrimination

   • H. D. Landahl

   OriginalPaper Pages: 107 - 125

7. Errata

   Erratum Pages: 126 - 126