1. Second-order factors

   • L. L. Thurstone

   OriginalPaper Pages: 71 - 100

2. Technique for weighting of choices and items on I.B.M. scoring machines

   • Sergeant David Grossman

   OriginalPaper Pages: 101 - 105

3. Factorial design in the determination of differential limen values

   • Palmer O. Johnson
   • Fei Tsao

   OriginalPaper Pages: 107 - 144

4. A review

   • G. Frederic Kuder

   BookReview Pages: 145 - 146