Theses and Dissertations
This collection includes both ASU Theses and Dissertations, submitted by graduate students, and the Barrett, Honors College theses submitted by undergraduate students.
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- All Subjects: Developmental Psychology
Description
The main objective of this study was to use a genetically-informative design to examine the putative influences of maternal perceived prenatal stress, obstetrical complications, and gestational age on infant dysregulation, competence, and developmental maturity. Specifically, whether or not prenatal and obstetrical environmental conditions modified the heritability of infant outcomes was examined. A total of 291 mothers were interviewed when their twin infants were 12 months of age. Pregnancy and twin birth medical records were obtained to code obstetrical data. Utilizing behavioral genetic models, results indicated maternal perceived prenatal stress moderated genetic and environmental influences on developmental maturity whereas obstetrical complications moderated shared environmental influences on infant competence and nonshared environmental influences on developmental maturity. Gestational age moderated the heritability and nonshared environment of infant dysregulation, shared and nonshared environmental influences on competence, and nonshared environmental influences on developmental maturity. Taken together, prenatal and obstetric conditions were important nonlinear influences on infant outcomes. An evolutionary perspective may provide a framework for these findings, such that the prenatal environment programs the fetus to be adaptive to current environmental contexts. Specifically, prenatal stress governs gene expression through epigenetic processes. Findings highlight the utility of a genetically informative design for elucidating the role of prenatal and obstetric conditions in the etiology of infant developmental outcomes.
ContributorsMcDonald, Kristy (Author) / Lemery-Chalfant, Kathryn S (Thesis advisor) / Fabricius, William (Committee member) / Luecken, Linda (Committee member) / Spinrad, Tracy (Committee member) / Arizona State University (Publisher)
Created2011
Description
Many children who testify to alleged sexual abuse struggle to answer questions about touching, likely because attorneys and children may operate under different definitions of “touch.” However, little is known about how children define touch, and the most productive question type for eliciting reports of touching has yet to be determined. In the present investigation, Study 1 examined (N = 64, 5 - 12 years of age) children’s testimonies to identify the sources of misunderstanding when children report abusive touch in court. In light of the language difficulties observed in Study 1, specifically, that attorneys and children appeared to be operating under different definitions of touch, a laboratory study (Study 2) was conducted to examine (N = 95, 4 - 7 years of age) children’s definition of touch, and how children reported touching in response to open-ended wh- questions, compared to close-ended yes
o questions. Body contact (i.e., manual and non-manual touch, compared to touching with an object) was most closely representative of children’s definition of touch. Additionally, children reported touch more often, and provided more informative reports of touch, in response to wh- questions, compared to yes
o questions. These findings demonstrated that children’s definition of touch exists on a scale, and through asking specific, open-ended wh- questions attorneys can elicit reports of touching from children even when definitional discrepancies are present.
o questions. Body contact (i.e., manual and non-manual touch, compared to touching with an object) was most closely representative of children’s definition of touch. Additionally, children reported touch more often, and provided more informative reports of touch, in response to wh- questions, compared to yes
o questions. These findings demonstrated that children’s definition of touch exists on a scale, and through asking specific, open-ended wh- questions attorneys can elicit reports of touching from children even when definitional discrepancies are present.
ContributorsSullivan, Colleen (Author) / Stolzenberg Roosevelt, Stacia N. (Thesis advisor) / Spohn, Cassia (Committee member) / Fabricius, William (Committee member) / Arizona State University (Publisher)
Created2020