Cox, Friedman, and Sadiraj (2008) develop a model of reciprocity, „Revealed Altruism‟, which posits that a „more generous than‟ (MGT) offer elicits a „more altruistic than‟ (MAT) response. A MGT ordering is defined by two conditions. Condition a) states that MGT is ordered by the maximum potential increase in income of the recipient, or that the more you stand to receive from an offer, the more generous it is to you. Condition b) states that the increase in maximum potential income of the recipient cannot be less than the maximum potential increase in income of the proposers. In other words, Condition b) states that an offer cannot be self-serving, but it is not specified in Cox, Friedman, and Sadiraj (2008) precisely how b) affects the MGT ordering. I propose that a violation of b) is considered self-serving and is less MGT than when b) is not violated. I then experimentally study the empirical relevance of b) using two designs that hold a) constant, comparing MGT differences implied by responses. The first design is a variant of the Lost Wallet Game (Dufwenberg & Gneezy, 2000) with a negative outside option, and the second design is a modified Investment Game (Berg, Dickhaut, & McCabe, 1995) with elements of the Dictator Game implemented by Andreoni and Miller (2002). I find no empirical support that b) affects the MGT ordering.

Widowhood is a stressful life event that can impact an individual’s everyday life, including her decision making abilities. The complexity of the decision is also likely to influence the decision making abilities of these widows. The purpose of this dissertation was to better understand widows’ decision making processes, their preferences for collaboration when making decisions, and their satisfaction with the decision outcomes. Data analysis consisted of a series of 3 (widowed status) x 2 (task complexity) ANOVAS and ANCOVAS which found that both complexity and widowed status influence decision making processes. Higher complexity led to less overall satisfaction, but none of the other satisfaction variables yielded significant results. In addition, there were no significant findings with regard to preferences for collaboration. Multiple linear regressions were conducted to better understand individual difference variables on decision processing. Restoration orientation coping, loss orientation coping, and task complexity were found to be significant for decision processing and satisfaction measures. Future studies should aim to develop decision aids for this particular population so that they are able to make better decisions.

The first chapter reports experiments with payoff-equivalent public good and common pool games. Behavior of high-caste and low-caste Indian villagers is compared with behavior of American students in terms of economic surplus foregone or destroyed by failure of cooperation in the public good and common pool games. When information about caste is withheld no significant difference is observed in the efficiency of play between villagers and student subjects at American universities for both the public good game and the payoff-equivalent common pool game. Providing caste information leads to: (i) the lowest level of efficiency when low-caste first movers interact with a low-caste second mover, and (ii) the highest levels of efficiency when high-caste first movers engage with a high-caste second mover. Cross-caste play generates intermediate levels of efficiency. In my second chapter I examine competition and cooperation across genders and castes in India and compare the data with incentivized laboratory experiments across genders and races in the US. High-caste males (India) and White males (U.S.) choose to compete the most and are universally cooperative. In India females compete more and cooperate less when they are paired with other females but not with males. The level of cooperation among the females of either race (US) is lower than that of the White males but is insignificantly different from the level of cooperation among the African American males. In my third chapter I conducted artifactual field experiments in rural India with variations of dictator and ultimatum games. Eight treatments are played: in four we provide information that the other player is the spouse and in the remaining four variations spouse information is not provided. When subjects are unaware of playing with their spouses, they choose to keep the dictator role for themselves or not empower the other player. Male spouses make higher offers in general relative to female spouses. The divisions in these games (no spouse information) are far less equitable than in dictator games with student subjects. We find more concern for procedural fairness when subjects know they are playing with their spouses than when they do not have this information.

The purpose of the study was to gauge Grade 4 Life Orientation educators‟ understanding of what learning style diversity entails, and to explore how they accommodate diverse learning styles during teaching and learning in inclusive Life Orientation classrooms. The study explored the educators‟ choice of teaching methods and strategies, learning activities and assessment approaches to accommodate diverse learning styles in their classrooms. The first phase of the study was characterized by a literature review, which guided the formulation of focus group interview questions as well as observation criteria. The literature review explored the notion of accommodating diverse learning style needs as an important aspect of inclusive education, as well as the teaching methods and strategies, learning activities and assessment approaches that could be employed to accommodate learning style diversity in inclusive Life Orientation classrooms. The second phase of the study comprised the empirical research. Within an interprevistic framework, qualitative research by means of focus group interviews and observations was undertaken to collect data in order to determine educators‟ understanding of learning style diversity and to explore how they accommodate diverse learning style needs in their inclusive Grade 4 Life Orientation classrooms. Focus group interviews were conducted with a convenient and purposively selected sample of Grade 4 Life Orientation educators (n=40) who teach at Township schools in the Sedibeng West District of the Gauteng Department of Education. In addition to the focus group interviews, observations were done in the classrooms of five willing educators who took part in the focus group interviews to observe how the educators accommodate diverse learning style needs in practice during their teaching. The data analysis revealed that educators do not have an adequate understanding of what diverse learning style needs imply, and do not accommodate diverse learning style needs in a balanced way in their classrooms. Both the findings from the focus group interviews and observations indicated that educators experience challenges in accommodating diverse learning style needs during the teaching of Grade 4 Life Orientation in inclusive classrooms. These challenges inter alia relate to time, workload, overcrowded classrooms and a need for guidance on how to accommodate diverse learning style needs. Based on the data obtained, examples of teaching, learning and assessment activities that could form part of a teaching and learning programme for Grade 4 Life Orientation was developed to guide educators in addressing learning style diversity during teaching. In the absence of curriculum-based teaching and learning programmes that guide educators in accommodate diverse learning styles during the teaching of Life Orientation, this study makes a valuable contribution. Key concepts: learning style diversity, learning preferences, pedagogical barriers to learning, inclusive education / PhD, Teaching and Learning, North-West University, Vaal Triangle Campus, 2012

Increased possibilitiesof choosing one’s school of preference hasbeen raised as a key factor in many countries to promote equal opportunitiesand higher quality of education. This has been endorsed by policymakers whoassume that students make well-informed rational choices and that students only stress academic quality whendeciding which school to attend. If this is true, it will benefit schools ofhigh academic quality, rendering improved school quality overall. To date,little research has examined the validity of these assumptions despite theprofound effects they have had for changing the school systems in manycountries. This study employs an experimental approach to investigate therelative importance of attributes in school choice. Specifically the study isbased on experimental data from 587 prospective high school students inHalmstad, Sweden. The purpose is to contrast the principal school qualityattributes behind the policy change (academic reputation and programfeasibility), with the presence of friends and geographical attributes such asdistance, location and accessibility, while controlling for individualcharacteristics. The results are disturbing as they reveal flaws in theassumptions that motivated the school choice policy reform. The study presents evidence of differencesin preferences and that grades are the most important background characteristic for this difference. The study also shows that all studentsare not rational to the same extent as theory predicts. Hence theSwedish school reforms have been based on a slightly biased theory. Finally, the study indicates that differentgeographic contexts (e.g. where the studentslive) affect students' preferences.

The development of a scum in a commercial sports drink is of concern because the product would be of poor quality, which may result in financial losses due to consumer rejection of the product and hence a decrease in the firm’s market share. The scum could be harmful to health and as such the firm could be litigated. Several factors, including microbial proliferation, may be the cause of the development of a scum in sports drink, but the actual cause seems not to have been established. The aim of this study was to characterise the scum in sports drink and determine the effects of preservation factors (pasteurisation, chemical preservatives and refrigeration) on its development. Samples of the sports drink were taken at different stages of processing to determine the effect of preservatives, pasteurisation and storage temperature on scum development. Some samples were kept at room temperature (approx. 25°C) and others were kept in the refrigerator (approx. 4ºC) during the study. A total of 150 samples were analysed over a period of four months. The structural characteristics of the scum that developed in the sports drink were determined by scanning electron microscopy (SEM) and elemental analysis. The sports drink samples were analysed for their microbial load and microbial types. Consumer acceptability of pasteurised and non-pasteurised drink was compared by conducting sensory evaluation using a consumer panel of 60 panellists. Customer complaints recorded by the sports drink manufacture that were due to scum development in the drink were also reviewed to establish the impact of scum development on consumer acceptability of the drink. The results of the study indicated that scum development was due to microbial contamination of the drink. The causative organism of the scum was identified as Acinetobacter baumanii. Acinetobacter baumanii is a gram negative non-spore forming coccobacilli and does not ferment sucrose. Acinetobacter baumanii forms the scum in sports drink as a means of protection from environmental stresses. The scum was found to be a compound of C, Si and O. The non-pasteurised samples were slightly more acceptable to consumers compared to the pasteurised samples. The consumer acceptability of pasteurised drink samples was negatively affected by the loss of aroma and flavour during pasteurisation. The preservation factors (chemical preservatives, pasteurisation and refrigeration) had no effect on scum development. To prevent post pasteurisation contamination, it is recommended that the pasteurisation process be done at the filling stage instead of at the holding stage. The frequency of changing rubbers and gaskets on the filling line should be at least every two months. The drink is pasteurised at 90ºC for 20 seconds, this needs to be reduced to a level where it will not have an influence on the loss of taste and aroma of the pasteurised drink, but without reducing the effectiveness of pasteurisation. / Thesis (M.Sc.Agric.)-University of KwaZulu-Natal, Pietermaritzburg, 2013.

This paper uses data acquired from five Baseball statistics websites from the 2006-2010 Major League Baseball seasons to test the effect of increasing information in the Trade Market. Specifically, to test how increasing information affects teams’ preferences in the Trade Market. Player age and service time were used as predictors of team preferences, and an interaction variable between team winning percentage and week of season was used as a predictor of increasing team information. This paper finds that—with significance—the effect of a team’s winning percentage in relation to week in the season a given trade takes place has a negative effect on an acquired player’s tenure and a positive effect on an acquired player’s age. This relationship is likely due to the fact that more successful clubs are looking for established veteran players who can provide immediate help to their Major League team. Conversely, poorly performing clubs are likely looking for younger players who will contribute to their Major League team in future seasons.

Debating over efficiency-enhancing but inequality-increasing reforms accounts for the routine business of democratic institutions. Fernandez and Rodrik (1991) hold that anti-reform bias can be attributed to individual-specific uncertainty regarding the distribution of gains and losses resulting from a reform. In this paper, we experimentally demonstrate that anti-reform bias arising from uncertainty is mitigated by social preferences. We show that, paradoxically, many who stand to lose from reforms vote in favor because they value efficiency, while many who will potentially gain from reforms oppose them due to inequality aversion. (authors' abstract) / Series: Department of Economics Working Paper Series

In many areas of Artificial Intelligence (AI), we are interested in helping people make better decisions. This help can result in two advantages. First, computers can process large amounts of data and perform quick calculations, leading to better decisions. Second, if a user does not have to think about some decisions, they have more time to focus on other things they find important. Since users' preferences are private, in order to make intelligent decisions, we need to elicit an accurate model of the users' preferences for different outcomes. We are specifically interested in outcomes involving a degree of risk or uncertainty. A common goal in AI preference elicitation is minimizing regret, or loss of utility. We are often interested in minimax regret, or minimizing the worst-case regret. This thesis examines three important aspects of preference elicitation and minimax regret. First, the standard elicitation process in AI assumes users' preferences follow the axioms of Expected Utility Theory (EUT). However, there is strong evidence from psychology that people may systematically deviate from EUT. Cumulative prospect theory (CPT) is an alternative model to expected utility theory which has been shown empirically to better explain humans' decision-making in risky settings. We show that the standard elicitation process can be incompatible with CPT. We develop a new elicitation process that is compatible with both CPT and minimax regret. Second, since minimax regret focuses on the worst-case regret, minimax regret is often an overly cautious estimate of the actual regret. As a result, using minimax regret can often create an unnecessarily long elicitation process. We create a new measure of regret that can be a more accurate estimate of the actual regret. Our measurement of regret is especially well suited for eliciting preferences from multiple users. Finally, we examine issues of multiattribute preferences. Multiattribute preferences provide a natural way for people to reason about preferences. Unfortunately, in the worst-case, the complexity of a user's preferences grows exponentially with respect to the number of attributes. Several models have been proposed to help create compact representations of multiattribute preferences. We compare both the worst-case and average-case relative compactness.

Climate and weather have a major influence over seasonality in nature-based tourism by determining the availability and quality of certain outdoor recreational activities (Butler, 2001). Climate and weather act as central motivators involved in the travel decisions of tourists (Mintel International Group, 1991; Kozak, 2002). Climate as an attraction is also an integral component considered in destination choice among tourists (Lohmann and Kaim, 1999; Hamilton and Lau, 2005; Gössling et al. 2006). Due to the relationship between climate, weather and outdoor recreation, climate change is expected to have a direct impact on park visitation and camper decision-making (Jones and Scott, 2006a; 2006b). This study contributes to the understanding of weather sensitivity for different tourism segments across varying climate zones world-wide which can contribute to more informed park tourism planning and climate change adaptation in Ontario. Using a survey-based approach, this study identified and compared the stated weather preferences and weather related decision-making of campers from two different provincial parks in Ontario. The two provincial parks selected as case studies, based on differing park characteristics and perceived climatic requirements, were Pinery and Grundy Lake. Statistically significant differences (at the 95 percent confidence level) were observed in stated weather preferences and weather related decision-making, based on differences in respondent characteristics. Most notably, activity participation, length of planned stay and age of the respondent had the most significant and widespread effect on weather preferences and camper decision-making. Temperature preferences between the two parks were strikingly similar. However, differences in weather related decision-making were statistically significant showing campers at Pinery to be more sensitive to weather than those at Grundy Lake. Overall, parks that are more beach-oriented, closer to tourism generating areas and are characterised by visitors with shorter than average lengths of stay, are likely to be the most sensitive to weather variability. As such, it will be most important for parks that rely on similar tourism generating markets and share similar park characteristics as Pinery, to place a greater planning emphasis on climate change adaptation, as these parks are likely to be most affected by the impact of climate change on park visitation in Ontario. Climatic warming was not perceived by campers as a major threat to park visitation in Ontario. Instead, heavy rain, strong winds and unacceptably cool temperatures were the most influential weather variables in relation to camper decision-making. In response to the perceived threat of heavy rain and strong winds to camping in Ontario, and in association with projected increases pertaining to the frequency and intensity of these weather events under climate change, a number of recommendations have been made, which could be implemented by Ontario Parks in an effort to reduce camper vulnerability to extreme weather and improve overall trip satisfaction.