Light-dependent pupation site preferences inDrosophila. II.Drosophila melanogaster andDrosophila simulans Melanie ManningTherese Ann Markow OriginalPaper Pages: 557 - 563
Twin-family studies of perceptual speed ability. II. Parameter estimation Richard J. RoseJudy Z. MillerDavid W. Fulker OriginalPaper Pages: 565 - 575
Social class correlations among separately adopted siblings and unrelated individuals adopted together T. W. TeasdaleDavid R. Owen OriginalPaper Pages: 577 - 588
Diagnosis of zygosity in twins: Reply to Wilson David T. Lykken Letter to the Editor Pages: 589 - 589
Behavior genetics association abstracts Organizers, Behavior genetics association abstracts Abstracts Pages: 593 - 618