Master of Science / Department of Psychological Sciences / Michael E. Young / Although risky decision-making tasks present some a priori risk (i.e., base-rate), decision makers often have an opportunity to modify this level of risk through their behaviors. Broadly speaking, risk can be modified by assigning additional resources to an ongoing task or by engaging in specific risk-mitigation strategies before or after the risky decision is made. The modification of risk requires ongoing awareness of task demands, resource constraints, and risk-mitigation strategies that can be used to adapt behavior over time. This thesis explores risk modification that occurs during difficult tasks. Difficult tasks hold greater risks because they fall at the edge of the decision maker’s abilities and are likely to require a greater number of resources to overcome. As resources are engaged they become unavailable for other tasks or strategies to cope with changing task demands. I studied how individuals monitor risks and develop risk mitigation strategies using a videogame task designed to mirror contingencies that would be encountered in the real world. Results from two experiments that involve this task suggest that decision-makers adequately monitor and develop active strategies for dealing with risks. These strategies change over time and vary as a function of task difficulty and experience.

Text in English / This research focuses upon the killing on 16 August 2012, by the South African Police Service, of miners working in Marikana, in the North West Province, in their struggle for a just wage. This experience highlighted the ethical question of the relationship between the employee and the employer. This research investigates this question by reference to the evolution of the doctrine of the “just wage” and the “just price” in Western moral philosophy. The investigation shows that this Western doctrine is a significant basis for an ethical evaluation of the relationship between employee and the employer. However, the doctrine does require expansion by taking the woman as an indispensable factor in labour relations. Also, it requires deepening by engaging in dialogue with other philosophies of the world, in this particular case, the philosophy of Ubuntu. The dialogue with Ubuntu is justified by the fact that the majority of the miners, the actual diggers of the mineral wealth, are born into and nurtured through the philosophy of Ubuntu, even if some may have reservations about it. The dialogue reveals a specific philosophical issue, namely, a clash of the epistemological and moral paradigms. The Ubuntu epistemological-ethical maxim of feta kgomo o tshware motho (if and when one must choose between the continual accumulation of wealth and the preservation of human life then one ought to opt for the latter) is fundamentally at odds with capitalism, an economic system that elevates wealth and money to the status of a deity. A resolution of this conflict is an ethical imperative. / Philosophy, Practical and Systematic Theology / D. Litt. et Phil. (Philosophy)