1. Editorial

   EditorialNotes Pages: 1 - 2

2. Schizophrenia: Evidence for the major gene hypothesis

   • R. C. Elston
   • M. A. Campbell

   OriginalPaper Pages: 3 - 10

3. The estimation of genetic variance from twin data

   • J. K. Haseman
   • R. C. Elston

   OriginalPaper Pages: 11 - 19

4. Genetic aspects of negative geotaxis in mice

   • Gardner Lindzey
   • D. D. Thiessen

   OriginalPaper Pages: 21 - 34

5. Seizure susceptibility in mice: Differences in brain ATP productionin vitro

   • James W. MacInnes
   • William O. Boggan
   • Kurt Schlesinger

   OriginalPaper Pages: 35 - 42

6. Lack of personality pathology in Turner's syndrome: Relation to cytogenetics, hormones and physique

   • John Money
   • Suzanne Mittenthal

   OriginalPaper Pages: 43 - 56

7. A quantitative genetic analysis of runway learning in mice

   • Patrick A. Tyler
   • Gerald E. McClearn

   OriginalPaper Pages: 57 - 69

8. Genetics of rearing behavior in mice

   • J. H. F. van Abeelen

   OriginalPaper Pages: 71 - 76

9. Timidity and fearfulness of laboratory mice: An illustration of problems in animal temperament

   • Glayde Whitney

   OriginalPaper Pages: 77 - 85

10. Short communication on a new audiogenic seizure prone mouse

    • John R. Wozny
    • Fred H. Wolfe

    BriefCommunication Pages: 87 - 88