Title of Research Project
Parental differential treatment: A twin-sibling-adoptee study
Major
Psychology
Research Abstract
From a behavioral genetic perspective, similar experiences between siblings will vary by genetic relatedness. The purpose of the present study was to examine parental differential treatment across twins, siblings, and adoptees using a genetic model. Mothers of 54 monozygotic (MZ) twins, 86 dizygotic (DZ) twins, 68 full siblings (FS), and 43 same-aged adoptees (VT) reported their differential treatment of both siblings in three dimensions: school, play, and discipline. The results supported our genetic hypothesis, with a significant effect for dyad type, F (9, 581) = 2.47, p<0.01.
Faculty Mentor/Advisor
Shirley McGuire
Included in
Parental differential treatment: A twin-sibling-adoptee study
From a behavioral genetic perspective, similar experiences between siblings will vary by genetic relatedness. The purpose of the present study was to examine parental differential treatment across twins, siblings, and adoptees using a genetic model. Mothers of 54 monozygotic (MZ) twins, 86 dizygotic (DZ) twins, 68 full siblings (FS), and 43 same-aged adoptees (VT) reported their differential treatment of both siblings in three dimensions: school, play, and discipline. The results supported our genetic hypothesis, with a significant effect for dyad type, F (9, 581) = 2.47, p<0.01.
