The current study provides evidence that individuals tend to adopt an integrative choice strategy when making sequential decisions under conditions of uncertainty. This contrasts with prior literature which proposes that decisions are made one at a time in isolation from one another (Camerer et al., 1997). By creating an experimental work task where only wage quality and feedback are manipulated, the resulting changes in intertemporal substitution between work and leisure are observed. In Experiments 1 3, a positive relationship between wages and time spent working that did not depend on task experience was observed. These results suggest that decisions are being made in consideration of other decisions, as isolated decisions would yield a negative relationship between wages and time spent working. In Experiment 4 these results were mitigated by the difficulty in differentiating between low and high wage quality days. These findings are taken to suggest that the results of prior studies are primarily due to self-control issues that subjects faced, which are not present in the present study.

In the domain of reasoning and decision making, some dual-process theorists have suggested that people are highly efficient at detecting conflicting outputs engendered by competing intuitive and analytic processes (De Neys & Glumicic, 2008; De Neys, Vartanian & Goel, 2008). For example, De Neys and Glumicic (2008) demonstrated that participants’ reason longer about problems that are characterized by a conflict between a stereotypical personality description and a base-rate probability of group membership. Crucially, this increase occurred even when participants gave the nominally erroneous stereotypical response (i.e., “neglecting” the base-rate probability), indicating that their participants detected that there was a conflict and, as a result, engaged in slow, analytic processing to resolve it. However, this finding, and much of the additional support for the efficient conflict detection hypothesis, has come from base-rate neglect problems constructed with probabilities (e.g., 995 doctors and 5 nurses) that were much more extreme than typically used in studies of base-rate neglect. I varied the base-rate probabilities over five experiments and compared participants’ response time for conflict problems with non-conflict problems. It was demonstrated that the integral increase in response time for stereotypical responses to conflict problems was fully mediated by extreme probabilities. I conclude that humans are not as efficient at detecting when they are engaging in biased reasoning as De Neys and colleagues have claimed.

Graduation date: 1981

From the time women suspect that they have breast cancer they may be faced with many decisions about themselves, their treatment, their relationship and their lives. Previous research in this area has focused largely on describing the different ways that patients behave when making decisions about treatment, and women's perspectives of making those decisions after the initial diagnosis of early breast cancer. However, there are no studies that provide an understanding of the range of decisions that women are likely to face and what the experience of making these decisions is like. The aims of this study were to describe the types of decisions women make during early breast cancer and to provide an in-depth understanding of the phenomenon of making decisions during the experience of early breast cancer. Health professionals may be able to use this understanding to improve their relationships with patients and further assist women to make decisions during their experience of early breast cancer. / Thesis (PhDHealthSciences)--University of South Australia, 2005.

In the field of sustainable manufacturing, a wide range of research has been carried out to attain the more effective use of natural resources and the reduction of environmental impacts during the whole product life cycle. This goal can be best achieved by promoting multiple-reuse of parts, sub-assemblies, or entire products. However, the decision toward reusing an old product depends on a variety of parameters with many uncertainties. Therefore, a comprehensive model to assess the reusability of products prior to the reuse decision is urgently needed. The objective of this research has been to develop a comprehensive assessment model, integrating technical, environmental, social, and economic aspects to evaluate the reusability of industrial products. The assessment model consists of four sub-models, which are a methodology to assess the quality and reliability of products, a model to translate the social responsibility aspect into warranty cost, a methodology to integrate environmental costs, and an economic model to accumulate total life cycle cost as the basis of the evaluation. The model also facilitates trade-offs between the factors to investigate the possibility to improve the reusability of a product. To apply the assessment model in the real business environment, a set of decisionmaking methodologies under different take-back scenarios has been developed as a guideline for manufacturers. Furthermore, as the existence of uncertainty in the reuse strategy is undeniable, a methodology to integrate uncertainties into the assessment model is also developed. The model validation, using three real cases collected from industrial partners on consumer and commercial products, has confirmed the applicability of the model to provide a useful tool to evaluate products at the end of their life cycle. The model also enables decision makers to disclose the risk associated with the decision, thus improving the quality of the decision. The results are in good agreement with the basic theory that the reuse and remanufacturing strategy is highly recommended from both environmental and economic reasons.

Providers are encouraged to view patients with chronic disease as ??partners?? in their care, and to collaborate with them in developing care plans. Yet there is little guidance in how collaboration should occur, and little evidence that collaborative care improves patient outcomes. Related models and measures of patient centred care and shared decision making have not been developed specifically for the context of chronic disease care. This thesis aimed to develop a theoretical understanding of how providers and patients make decisions in chronic disease care planning, how patients experience involvement in care planning, and to develop a measure of patient involvement. It consists of two studies: a qualitative study to develop a grounded theory of decision-making in diabetes care planning, and a scale development and psychometrics study. The qualitative study involved 29 providers and 16 patients with diabetes. It found that providers were concerned with a process described as ??managing patient involvement to do the right thing??, while patients were concerned with ??being involved to make sure care is appropriate??. This led to the theory of ??delivering respectful care??, a grounded theory that integrates provider and patient perspectives by showing how providers and patients can resolve their concerns while achieving mutually acceptable outcomes. Central to this theory is the process of finding common ground, while the key conditions are provider responsiveness and an ongoing, trusting and respectful provider-patient relationship. The Collaborative Care Planning Scale (CCPS), based on these findings, is a patient self-report scale that measures patients?? perceptions of involvement in care planning. After piloting the CCPS was tested amongst 166 patients with diabetes. Exploratory factor analysis resulted in a 27-item scale comprising two factors: ??receiving appropriately personalised care?? and ??feeling actively involved in decision-making??. Psychometrics tests revealed the CCPS has adequate internal consistency and test-retest reliability, and findings support construct validity. ??Delivering respectful care?? enriches understanding of the nature of collaboration in chronic disease care, and identifies those elements necessary to ensure patients receive best possible care. The CCPS provides the means for measuring what patients say they value, and is thus an important measure of quality chronic disease care.

In the field of sustainable manufacturing, a wide range of research has been carried out to attain the more effective use of natural resources and the reduction of environmental impacts during the whole product life cycle. This goal can be best achieved by promoting multiple-reuse of parts, sub-assemblies, or entire products. However, the decision toward reusing an old product depends on a variety of parameters with many uncertainties. Therefore, a comprehensive model to assess the reusability of products prior to the reuse decision is urgently needed. The objective of this research has been to develop a comprehensive assessment model, integrating technical, environmental, social, and economic aspects to evaluate the reusability of industrial products. The assessment model consists of four sub-models, which are a methodology to assess the quality and reliability of products, a model to translate the social responsibility aspect into warranty cost, a methodology to integrate environmental costs, and an economic model to accumulate total life cycle cost as the basis of the evaluation. The model also facilitates trade-offs between the factors to investigate the possibility to improve the reusability of a product. To apply the assessment model in the real business environment, a set of decisionmaking methodologies under different take-back scenarios has been developed as a guideline for manufacturers. Furthermore, as the existence of uncertainty in the reuse strategy is undeniable, a methodology to integrate uncertainties into the assessment model is also developed. The model validation, using three real cases collected from industrial partners on consumer and commercial products, has confirmed the applicability of the model to provide a useful tool to evaluate products at the end of their life cycle. The model also enables decision makers to disclose the risk associated with the decision, thus improving the quality of the decision. The results are in good agreement with the basic theory that the reuse and remanufacturing strategy is highly recommended from both environmental and economic reasons.

In the field of sustainable manufacturing, a wide range of research has been carried out to attain the more effective use of natural resources and the reduction of environmental impacts during the whole product life cycle. This goal can be best achieved by promoting multiple-reuse of parts, sub-assemblies, or entire products. However, the decision toward reusing an old product depends on a variety of parameters with many uncertainties. Therefore, a comprehensive model to assess the reusability of products prior to the reuse decision is urgently needed. The objective of this research has been to develop a comprehensive assessment model, integrating technical, environmental, social, and economic aspects to evaluate the reusability of industrial products. The assessment model consists of four sub-models, which are a methodology to assess the quality and reliability of products, a model to translate the social responsibility aspect into warranty cost, a methodology to integrate environmental costs, and an economic model to accumulate total life cycle cost as the basis of the evaluation. The model also facilitates trade-offs between the factors to investigate the possibility to improve the reusability of a product. To apply the assessment model in the real business environment, a set of decisionmaking methodologies under different take-back scenarios has been developed as a guideline for manufacturers. Furthermore, as the existence of uncertainty in the reuse strategy is undeniable, a methodology to integrate uncertainties into the assessment model is also developed. The model validation, using three real cases collected from industrial partners on consumer and commercial products, has confirmed the applicability of the model to provide a useful tool to evaluate products at the end of their life cycle. The model also enables decision makers to disclose the risk associated with the decision, thus improving the quality of the decision. The results are in good agreement with the basic theory that the reuse and remanufacturing strategy is highly recommended from both environmental and economic reasons.

Thesis (Ph. D. -- Systems and Industrial Engineering)--University of Arizona. / Includes bibliographical references.

Thesis (M.S. - Watershed Management)--University of Arizona. / Includes bibliographical references.