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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.