1. Optimal test length for maximum absolute prediction

   • Paul Horst
   • Charlotte MacEwan

   OriginalPaper Pages: 111 - 124

2. A least squares solution for paired comparisons with incomplete data

   • Harold Gulliksen

   OriginalPaper Pages: 125 - 134

3. Proportional profiles and latent structure

   • W. A. Gibson

   OriginalPaper Pages: 135 - 144

4. A non-parametric test of correlation using rank orders within subgroups

   • Warren S. Torgerson

   OriginalPaper Pages: 145 - 152

5. Maximizing test validity by item selection

   • Harold Webster

   OriginalPaper Pages: 153 - 164

6. The validity of the successive intervals method of psychometric scaling

   • William W. Rozeboom
   • Lyle V. Jones

   OriginalPaper Pages: 165 - 183

7. Relationships between two systems of factor analysis

   • C. W. Harris

   OriginalPaper Pages: 185 - 190

8. Testing message diffusion in harmonic logistic curves

   • Stuart Carter Dodd

   OriginalPaper Pages: 191 - 205

9. A method for obtaining an ordered metric scale

   • Sidney Siegel

   OriginalPaper Pages: 207 - 216

10. Book reviews

    • William Feller
    • Robert L. Thorndike

    BookReview Pages: 217 - 218