This dissertation studies two-person signaling games where the players are assumed to be Choquet expected utility maximizers a la Schmeidler (1989). The sender sends an ambiguous message to the receiver who updates his non-additive belief according to a f-Bayesian updating rule of Gilboa and Schmeidler (1993). When the types are unambiguous in the sense of Nehring (1999), the receiver's conditional preferences after updating on an ambiguous message are always of the subjective expected utility form. This property may serious limit the descriptive power of solution concepts under non-additive beliefs, and it is scrutinized with two extreme f-Bayesian updating rules, the Dempster-Shafer and the Bayes' rule. In chapter 3, the Dempster-Shafer equilibrium proposed by Eichberger and Kelsey (2004) is reappraised. Under the assumption of unambiguous types, it is shown that the Dempster-Shafer equilibrium may give rise to a separating behavior that is never supported by perfect Bayesian equilibrium. However, it does not support any additional pooling equilibrium outcome. Since the Dempster-Shafer equilibrium may support implausible behaviors as exemplified in Ryan (2002), a refinement based on coherent beliefs is suggested. In chapter 4, a variant of perfect Bayesian equilibrium, the quasi perfect Bayesian equilibrium, is proposed, and its descriptive power is investigated. It is shown that the quasi perfect Bayesian equilibrium does not support any additional separating behavior compared to perfect Bayesian equilibrium. It may support additional pooling behavior only if the receiver perceives a correlation between the types and messages. / Ph. D.

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The purpose of this dissertation was to analyze the susceptibility of capital budgeting decisions to bias. Based on the political nature of many of these decisions, attribute framing effects were analyzed in a capital budgeting decision context. Specifically, two independent variables were analyzed: accounting data and attribute frames. This research proposed that attribute framing effects would be conditional on the nature of the accounting data being considered. When the accounting data elicited a positive or negative evaluative reaction, attribute frames were expected to be unobtrusive to capital budgeting decisions. However, when the accounting data was neutral, eliciting an ambiguous evaluative reaction, attribute frames were predicted to bias these decisions. An experiment was conducted that considered the issue across two types of capital budgeting decisions: accept/reject decisions (dichotomous decision) and strategic alliance judgments (monetary allocations). Experimental findings strongly support the predicted relationships. These results suggest that persuasive descriptions are not effective in capital budgeting contexts when accounting data provides a clear picture as to the investment's future success; however, these tactics may be vitally important when accounting information is unclear about the investment's future success. / Ph. D.

The micro-level of administrative processes is in essence a set of interlocked roles and routines. Generally, such processes are viewed as neutral instruments and also of trivial importance. Contrary to such a view, this dissertation argues that at the micro-level, roles and routines, far from being simple and clear, turn out to be complex and ambiguous. This is because their interaction involves different institutional rules, agency norms, information, and cognitive orientations that need to be continuously accommodated in a seamless web of implementation. The creation and retention of ambiguity is conceived of as a natural outcome of such accommodation. This dissertation explores such a possibility in the role-routine interactions involved in the execution phase of the budget process. Budget execution is widely held to be a control process. But the nature of such control is far less straight-forward and far more complex than is commonly assumed. The dissertation explains the management of such complexity in terms of the retention of ambiguity in the control processes of budget execution. / Ph. D.

Designers and non-designers alike often describe fabric in ways that are markedly different or unclear. For example, two designers might attribute qualities such as ``heavy'' to a material, but actually mean completely different things, despite using the same words. This ambiguity in description becomes more prominent when the designer has to make sense of the fabric remotely, such as shopping online. This ambiguity in description presets an opportunity to study user interface design that supports, rather than diminishes, the role of ambiguity, which is often a resource in design domains. Our most important research question was: How can we design interfaces with standard interface toolkits to help designers explore and understand material remotely? For our approach, we studied how people described distinct fabrics, from experts, novices, to everyday people and the crowdsourcing community on how they interpret fabrics. We applied that information to designs that communicated materiality and ambiguity in various ways, and studied how interfaces affected a user's process of exploring materials and negotiating the meaning of materiality. The most important findings are user interface guidelines that apply to designing technology any domain focused on description and ambiguity, such as design domains. Such design guidelines include: (1) the importance to communicate distinctions between description and category, (2) The role of ambiguity in design, while well-supported in the literature, is a value not shared among all practitioners, and (3) a better understanding of the different ways users negotiate with description and make sense of material remotely. / Ph. D.

Since the beginning of the Global War on Terror, almost three million children, spouses, and adult dependents have been directly affected by the deployment experiences of more than two million service members. This study examined the applicability of the Contextual Model of Family Stress (Boss, 2002) to a reintegrating military family sample (N = 228) by assessing the effects of external, military-related contextual factors (i.e., rank, component, combat exposure, length of time home post-deployment, and cumulative length of deployments) and internal contextual factors of boundary ambiguity and family and deployment-related ambivalence on family functioning. Quantitative data were taken from a national survey of service members from multiple branches of the United States military. A hierarchical regression analysis revealed that, as a whole, the addition of the military-related contextual factors, boundary ambiguity, and the ambivalence variables made a significant contribution to the prediction of family functioning, controlling for all previously entered variables. Service members from lower ranks and those who had been home for longer periods of time reported poorer family functioning. Higher degrees of boundary ambiguity and family ambivalence were also associated with poorer family functioning. The results from this study extend existing theoretical applications of the Contextual Model (Boss, 2002) to military families through the incorporation of boundary ambiguity and ambivalence. Findings will also inform interventions aimed at promoting family resilience in the military population during the post-deployment period. / Ph. D.

This body of work is composed of three individual papers that each seek to explain individual differences in creative cognition. Paper 1 used structural equation modeling to examine the ways in which creative problem solving and creative idea generation relate or differ. Results from Paper 1 demonstrate that divergent thinking and creative problem solving are best represented as a bifactor model, bearing distinct domain-specific factors, as well as a shared domain-general factor. Though working memory and fluency of memory retrieval explained significant portions of the domain-specific constructs, they only explained ~2% of variance in the domain-general factor. Paper 2 explores the idea that domain-general creativity can be attributed to the structure of one’s knowledge. Semantic networks were developed and compared across high and low general creativity, divergent thinking, creative problem solving, and working memory. Results indicated that, in general, a looser network structure is more amenable for flexible thought processes across multiple classifications of creative ability. Paper 3 explores the idea that domain-general creativity can be attributed to one’s ability to overcome salient, prepotent responses. More specifically, Paper 3 argues that the presence of ambiguities enhances the likelihood that someone will develop a faulty mental representation that requires restructuring in order to reach the desired solution or response. Results demonstrate that overcoming ambiguities in language comprehension draws on similar processes as creative problem solving: ambiguous language comprehension predicted creative problem solving above and beyond that of working memory, fluid intelligence, or normal sentence comprehension. Importantly, this relationship was unique to creative problem solving, as the effect disappeared when predicting analytic problem solving. Together, these studies suggest that the ability to overcome ambiguities and the organization of one’s semantic knowledge are both critical components underlying creativity. More generally, this work has highlighted the ways in which domain-specific and domain-general processes are unique or shared across different measures of creativity, and researchers should be aware of these relationships as they work to advance the creativity literature.

Times of transition are laden with ambiguity, and the move from high school to college has an additional component of role changes to add to this uncertainty. In the spring and summer of 2020, this transition was disrupted by the changes brought on by the pandemic, affecting social norms, routines, and overall mental health outcomes. For professionals such as counselors and advisors to be able to provide specialized support, it is important to understand emerging adults' experiences at this time and to identify factors that helped them cope with this transition. Understanding the development of coping strategies has direct implications for both therapy and clinical practice which can work together to provide a higher quality of care for the people affected by the stress of major life transitions. In this study, I used a mixed-methods design to understand the experience of emerging adults who graduated high school during the pandemic, and the relation between tolerance for ambiguity and coping strategies, resilience, and psychological impact. / Master of Science / The COVID-19 pandemic had a significant impact on so many of us here in the United States and abroad. This was a time in which so much of what we considered normal was totally disrupted by all of the changes that the pandemic caused. For my thesis I wanted to look at how the pandemic changed the ways that students who were in high school transitioned and moved on to college. I wanted to know what existing factors such as their ability to handle uncertainty impacted this transition and if it ended up being helpful for them. For this project I looked at how a person's ability to handle uncertainty, called tolerance for ambiguity in this study, impacted students abilities to cope with uncertainty, psychological impact of the pandemic, and resiliency overall.