Evolutionary Theory and Parent-Child Conflict: The Utility of Parent-Offspring Conflict Theory
Name:
azu_etd_11240_sip1_m.pdf
Size:
932.6Kb
Format:
PDF
Description:
azu_etd_11240_sip1_m.pdf
Issue Date
2010Keywords
conflictdevelopment
evolution
parent-child conflict
parent-child relations
parent-offspring conflict
Advisor
Ellis, Bruce JCommittee Chair
Ellis, Bruce JMetadata
Show full item recordPublisher
The University of Arizona.Rights
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.Abstract
Parent-offspring conflict theory (POCT) has been underutilized by researchers interested in family relationships. The goal of these three manuscripts is to help remedy this problem.Manuscript one presents POCT in its original formulation and more recent developments. The theory is described and explained and four topical areas of human development are discussed in terms of how POCT has been applied and how the theory can help inform future research.Manuscript two tests hypotheses derived from POCT about mother-adolescent conflict. This study showed that coresidence with a younger half sibling significantly incremented conflict between mothers and their children. This effect was not explained by SES, maternal depression, number of children in the household, or stepfather presence. In addition, children in younger half sibling households demonstrate elevated levels of conflict compared to families with a younger full sibling indicating that this effect is not an artifact of coresidence with a younger sibling. Presence of a younger half sibling also partially mediated the relationship between biological parental disruption and mother-child conflict.Manuscript three sought to extend on the findings from manuscript two by examining how different family contexts affect trajectories of mother-child conflict across adolescence. A piecewise growth model was implemented to estimate linear conflict trajectories from early to mid and from mid to late adolescence. Results indicated that conflict tends to increase from early to mid adolescence but remain constant from mid to late adolescence, that biological parental disruption did not differentiate trajectories of conflict, nor did living with a stepfather. In addition, despite a large difference in regression coefficients between families with and without a younger half sibling, younger half sibling status did not differentiate conflict trajectories from early to mid adolescence. Families did differ in their trajectories from mid to late adolescence with younger half sibling families showing a reduction in conflict over this time period. Inclusion of family level covariates effectively nullified all significant results. Results are discussed in the context of parent-offspring conflict theory. It is concluded that a larger sample with more diverse family types is needed to achieve sufficient power for additional analyses and future research.Type
textElectronic Dissertation
Degree Name
Ph.D.Degree Level
doctoralDegree Program
Family & Consumer SciencesGraduate College
Degree Grantor
University of ArizonaCollections
Related items
Showing items related by title, author, creator and subject.
-
Preferential retention of genes from one parental genome after polyploidy illustrates the nature and scope of the genomic conflicts induced by hybridization.Polyploidy is increasingly seen as a driver of both evolutionary innovation and ecological success. One source of polyploid organisms' successes may be their origins in the merging and mixing of genomes from two different species (e.g., allopolyploidy). Using POInT (the Polyploid Orthology Inference Tool), we model the resolution of three allopolyploidy events, one from the bakers' yeast (Saccharomyces cerevisiae), one from the thale cress (Arabidopsis thaliana) and one from grasses including Sorghum bicolor. Analyzing a total of 21 genomes, we assign to every gene a probability for having come from each parental subgenome (i.e., derived from the diploid progenitor species), yielding orthologous segments across all genomes. Our model detects statistically robust evidence for the existence of biased fractionation in all three lineages, whereby genes from one of the two subgenomes were more likely to be lost than those from the other subgenome. We further find that a driver of this pattern of biased losses is the co-retention of genes from the same parental genome that share functional interactions. The pattern of biased fractionation after the Arabidopsis and grass allopolyploid events was surprisingly constant in time, with the same parental genome favored throughout the lineages' history. In strong contrast, the yeast allopolyploid event shows evidence of biased fractionation only immediately after the event, with balanced gene losses more recently. The rapid loss of functionally associated genes from a single subgenome is difficult to reconcile with the action of genetic drift and suggests that selection may favor the removal of specific duplicates. Coupled to the evidence for continuing, functionally-associated biased fractionation after the A. thaliana At-α event, we suggest that, after allopolyploidy, there are functional conflicts between interacting genes encoded in different subgenomes that are ultimately resolved through preferential duplicate loss.
-
Constructive and destructive interparental conflict, parenting, and coparenting allianceGuided by the spillover hypothesis of family systems theory, we used data from the Building Strong Families project to examine intrafamily relations between destructive and constructive interparental conflict, harsh and supportive parenting behaviors, and coparenting alliance across different family configurations: married, cohabiting, and noncohabiting (never married) parents. Our sample (N = 2,784 couples/parents) was racially diverse, low-income couples/parents who were unmarried at the conception of their child. All variables were measured when children were approximately 36 months of age. Interparental conflict was assessed through an instrument that included both parents' reported conflict in the relationship and the perception of the other parent's conflict behaviors. Parenting behaviors were measured through observational data and coparenting alliance was based on mothers' and fathers' reports. As expected, path analyses revealed that destructive interparental conflict was related to lower levels of coparenting alliance, whereas constructive interparental conflict was related to higher levels of coparenting alliance, for mothers and fathers. For fathers only, destructive interparental conflict related to harsh parenting, suggesting that paternal parenting is vulnerable to the quality of the relationship with the mother. None of the proposed associations differed by family structure. These findings suggest the need for intervention programs to focus on promoting adaptive conflict management behaviors rather than on family structure. (PsycInfo Database Record (c) 2020 APA, all rights reserved).
