A Newly Uncovered Phenotype Associated with the fruitless Gene of Drosophila melanogaster: Aggression-like Head Interactions Between Mutant Males Gyunghee LeeJeffrey C. Hall OriginalPaper Pages: 263 - 275
Two Mouse Lines Selected for Differential Sensitivities to β-Carboline-Induced Seizures Are Also differentially Sensitive to Various Pharmacological Effects of Other GABAA Receptor Ligands Daisy RinaldiBenjamin BoutreGeorges Chapouthier OriginalPaper Pages: 277 - 284
Habituation of Activity in an Open Field: A Survey of Inbred Strains and F1 Hybrids Valerie J. BolivarBarbara J. CaldaroneLorraine Flaherty OriginalPaper Pages: 285 - 293
Natal Dispersal in Rhesus Macaques Is Related to Serotonin Transporter Gene Promoter Variation Andrea TrefilovJohn BerardJörg Schmidtke OriginalPaper Pages: 295 - 301
Self-Reported Zygosity and the Equal-Environments Assumption for Psychiatric Disorders in the Vietnam Era Twin Registry Hong XianJeffrey F. ScherrerMing T. Tsuang OriginalPaper Pages: 303 - 310
Multivariate Genetic Analysis of Brain Structure in an Extended Twin Design D. PosthumaE. J. C. de GeusD. Boomsma OriginalPaper Pages: 311 - 319
Genetic and Environmental Causes of Covariation in Interview Assessments of Disruptive Behavior in Child and Adolescent Twins Lindon EavesMichael RutterAndrew Pickles OriginalPaper Pages: 321 - 334
The Use of Mixture Models to Perform Quantitative Tests for Linkage Disequilibrium, Maternal Effects, and Parent-of-Origin Effects with Incomplete Subject—Parent Triads Edwin J. C. G. van den Oord OriginalPaper Pages: 335 - 343
Measurement Models for Sexual Orientation in a Community Twin Sample K. M. KirkJ. M. BaileyN. G. Martin OriginalPaper Pages: 345 - 356
Announcement of the First Fulker Award for a Paper Appearing in Behavior Genetics Norman D. Henderson OriginalPaper Pages: 357 - 358