1. Sir Godfrey Thomson

   • L. L. Thurstone

   Announcement Pages: 171 - 172

2. A generalized simplex for factor analysis

   • Louis Guttman

   OriginalPaper Pages: 173 - 192

3. Equating test scores—A maximum likelihood solution

   • Frederic M. Lord

   OriginalPaper Pages: 193 - 200

4. Axioms of a theory of discrimination learning

   • Frank Restle

   OriginalPaper Pages: 201 - 208

5. The objective definition of simple structure in linear factor analysis

   • Ledyard R Tucker

   OriginalPaper Pages: 209 - 225

6. F-test bias for experimental designs in educational research

   • Neil Gourlay

   OriginalPaper Pages: 227 - 248

7. Least squares estimates and optimal classification

   • Hubert E. Brogden

   OriginalPaper Pages: 249 - 252

8. An improved method for tetrachoricr

   • W. L. Jenkins

   OriginalPaper Pages: 253 - 258

9. Book reviews

   • Charles Wrigley
   • Walter M. Durost

   BookReview Pages: 259 - 262