Scholarship & Research
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Item The evocative effect of children's physiologocial stress reactivity on intrusive parenting(Montana State University - Bozeman, College of Letters & Science, 2017) Najjar, Reema; Chairperson, Graduate Committee: Rebecca BrookerSelf-regulatory processes, such as effortful control, are important facets of development for children's long term adjustment. Effortful control is known to be influenced by biological processes that enable regulatory function. Specifically, better biological regulation is associated with better effortful control. The direction of environmental effects, however, is less clear. Although theoretical perspectives support the possibility that parent-child influences are bidirectional, studies of self-regulation -- both physiological regulation and effortful control -- have almost exclusively focused on a parent-to-child direction of effects. Almost no research has investigated the influence of children's physiological and behavioral regulation on parenting behaviors. My thesis explored one process by which physiological regulation, indexed through measures of neuroendocrine reactivity, and behavioral regulation, indexed as effortful control, may evoke intrusive behaviors in parents. I hypothesized that greater cortisol reactivity would predict lower levels of effortful control, which would subsequently predict greater intrusive parenting. I tested my hypothesis in a sample of preschool-aged children and their parents, capitalizing on a critical period for the development of self-regulation. Results indicate that cortisol reactivity did not work through effortful control to predict parent intrusiveness. However, effortful control did moderate the association between child cortisol reactivity and parent intrusiveness. Specifically, when children were high in effortful control, greater cortisol reactivity predicted greater intrusive parenting. This work sheds light the importance of considering bidirectional effects in the development of self-regulation in early childhood.Item The effect of a progesterone implant and GnRH infusion on blood LH and progesterone levels in postpartum cows(Montana State University - Bozeman, College of Agriculture, 1975) Li, Pi-Hsueh ShirleyItem The effects of foliar applied gibberellic acid3 on the dormancy of wild oat seeds(Montana State University - Bozeman, College of Agriculture, 1975) Bowman, HowardItem Evaluation of barley cultivars for gibberellic acid activity(Montana State University - Bozeman, College of Agriculture, 1976) Barr, Eloise LerchItem Exogenous hormone therapy to control the postpartum interval in beef cows(Montana State University - Bozeman, College of Agriculture, 1979) Foster, Dallas BlairItem Some effects of ACTH, STH, noradrenaline and thyroid hormone on young rats starved at two different temperatures(Montana State University - Bozeman, College of Agriculture, 1969) Bradshaw, Blaine StuartItem Consumer response to biotech food labeling : the effects of voluntary rBGH-free labels on fluid milk demand(Montana State University - Bozeman, College of Agriculture, 2002) Kiesel, Kristin; Chairperson, Graduate Committee: Vincent H. Smith; David E. Buschena (co-chair)Consumer response to labeling policies for genetically modified organisms (GMO) in food products is investigated by considering voluntary labeling with respect to the use of the genetically modified Bovine Growth Horri:lone (rBGH) in fluid milk. Existing theoretical approaches on the provision and acquisition of information are extended to develop a framework that specifically addresses the effects of labeling on the relationship between consumer knowledge, information search and product choice. A new data set is utilized in the data analysis. The data set combines national-level supermarket scanner data for fluid milk demand with information about the use of rBGH in milk production and product specific labeling. Estimated parameter coefficients indicate that consumer beliefs previously measured in survey responses lead to an observable and statistically significant change in market behavior. Demand for fluid milk products labeled as rBGH-:free is significantly higher than demand for conventional fluid milk products and increases slightly over time. A positive demand effect is identified for rBGH-:free labeled products but not for unlabeled products, indicating that the provision of labeling information is necessary for market segmentation between conventional and rBGH-:free products. Demand estimates with regard to organic certification of products appear to be affected by market penetration of organic products during the time period analyzed. In addition, price elasticity estimates for half gallons of milk suggest that consumers are less responsive to price changes in rBGH-:free labeled milk products than in conventional milk products.