1. Inbreeding and heterogamic mating: An alternative to Averhoff and Richardson

   • Edwin H. Bryant

   OriginalPaper Pages: 249 - 256

2. Genetic and behavioral studies of female sex appeal inDrosophila

   • Jean-Marc Jallon
   • Yoshiki Hotta

   OriginalPaper Pages: 257 - 275

3. Behavior in chimeric mice combining differently behaving strains

   • Muriel N. Nesbitt
   • M. Anne Spence
   • Karla Butler

   OriginalPaper Pages: 277 - 287

4. Sex effect on the risk of mental retardation

   • David L. Pauls

   OriginalPaper Pages: 289 - 295

5. Genetic basis of aristal morphology inDrosophila melanogaster and its correlation with behavior: Selection for increased and decreased aristal branching

   • Donald W. Pyle
   • Rollin C. Richmond

   OriginalPaper Pages: 297 - 308

6. Genetic selection for avoidance behavior in the rat

   • F. R. Brush
   • J. C. Froehlich
   • P. C. Sakellaris

   Short Communication Pages: 309 - 316

7. Phenotypic vs. genotypic sex and cognitive abilities

   • J. Rovet
   • C. Netley

   Short Communication Pages: 317 - 322

8. Availability of behaviorally selected strains of rats

   • P. L. Broadhurst

   Letter to the Editor Pages: 323 - 324

9. Reply: A note on the Roman and Tryon selected lines of rats

   • Douglas Wahlsten
   • Hymie Anisman

   Letter to the Editor Pages: 325 - 326

10. Announcements

    Announcement Pages: 327 - 328