Chronic diseases place a substantial economic burden on the health care system. Physical inactivity, poor diet and smoking are considered to be the main causes of high rates of chronic disease. Evidence clearly supports the positive influence of physical activity on health determinants, other health outcomes and quality of life. This implies that an increase in physical activity improves general health status and has the potential to reduce utilization of expensive healthcare services and disability days. Earlier studies show that physical activity programs would be an effective way of providing preventive care for people with chronic conditions. However studies that relate physical activity programs to health care utilization are limited in economics literature.<p>The aim of this paper is to examine the impact of physical activity programs on healthcare utilization. From 2002 to 2003, adults over the age of 50 years, in a mid-size Canadian city, presenting with excess weight, type 2 diabetes, hypertension, hyperlipidemia or osteoarthritis were recruited. Following a screening process, eligible participants were randomly assigned to one of two programs: a class-based structured program or a home-based unstructured program. Validated questionnaires related to health status and quality of life were completed and physical tests were carried out at baseline, 3, 6, 12 months and 24 months after the program initiation. In addition participants use of physician and hospital services and pharmaceutical expenditures were accessed through their administrative data files for three years, one year before and two years after the intervention. Using administrative data from Sask Health and individual level survey data the effects of physical activity programs on health care utilization were estimated. The results showed that structured physical activity program can reduce annual physician costs significantly. The exponential effect of aging was found to be significant on hospital utilization, and the number of comorbidities was found to be significant on prescription drug utilization.

It is difficult to deny the ubiquitous nature of our mediated landscape in the United States. With the plethora of mediated messages come media related risks for children. Training in media literacy is one way to combat these risks. Unfortunately, most American public school media literacy standards are in need of improvement. This project examines how media literacy functions in American K-12 public schools. It not only applies a standard of assessment for media literacy standards, but also provides a synopsis of the range of advanced to poor programs across the country. Then, suggestions for improving lacking programs are revealed in a case study on Texas’ advanced media literacy program.

Conditional cash transfer (CCT) programs have become the most important social policy in Latin America, and their influence has spread to countries around the world. A number of studies provide strong evidence of the positive impacts of these programs on the main targeted outcomes, education and health, and have proved successful in other outcomes such as nutrition, household income, and child labor. As we expect CCT programs to remain a permanent aspect of social policy for the foreseeable future, demand for evidence of the indirect effects of CCT programs has grown beyond the initial emphasis of these programs. My research pays particular attention to these relevant but unintended outcomes, which have been discussed less extensively in the literature. Familias en Accion (FA), a CCT program in Colombia, started operating in 2002 and has benefited approximately 1,500,000 households since its beginning. The results of the program’s evaluation survey, representative of poor rural households in Colombia, are a very good source or investigating not only the unintended effects of the program but also the microeconomic behavior of poor households and social policy issues in the country. Using a panel dataset from FA, I address three empirical policy questions: (i) to what extent is consumption of beneficiary households better insured against income shocks? (ii) has the program displaced child labor as a risk-coping instrument?, and (iii) are there any incentive effects of the cash transfers and the associated conditionalities on the labor supply of adults in recipient households? Each of my research questions is addressed separately; however, the results, taken together, can be informative in understanding the safety net value of the program and their potentialities to reduce poverty in the long term. I find that the program serves as an instrument for consumption smoothing. In particular, FA is effective in protecting food consumption, but not nonfood consumption, and it reduces consumption fluctuations in response to idiosyncratic shocks but not to covariate shocks. Results also reveal that FA works as insurance for the schooling of the poor but is not able to completely displace child labor. Finally, the results also show that beneficiary mothers are devoting more time to household chores and that girls and female adult labor are complementary. Male labor supply has increased while boys have increased leisure time as a response to the program.

This dissertation comprises four chapters. The unifying theme is the evaluation of environmental programs. Specifically, each chapter examines some facet of the impacts of protected areas. The first chapter examines the heterogeneous environmental and economic impacts of protected areas in Costa Rica. Previous studies suggest that Costa Rica's protected area system induced both reduced deforestation and alleviated poverty. We demonstrate that these environmental and social impacts were spatially heterogeneous. Importantly, the characteristics associated with the most avoided deforestation are the characteristics associated with the least poverty alleviation. In other words, the same characteristics that have limited the conservation effectiveness of protected areas may have improved the social welfare impacts of these areas. These results suggest that `win-win' efforts to protect ecosystems and alleviate poverty may be possible when policymakers are satisfied with low levels of each outcome, but tradeoffs exist when more of either outcome is desired. The second chapter explores in more detail the heterogeneous impacts of protected areas in Costa Rica and Thailand. In particular we investigate the potential for protected areas to act as a mechanism for poverty traps and use semiparametric models to identify the spatial congruence of environmental and economic outcomes. We find no evidence that protected areas trap historically poorer areas in poverty. In fact, we find that poorer areas at baseline appear to have the greatest levels of poverty reduction as a result of protection. However, we do find that the spatial characteristics associated with the most poverty alleviation are not necessarily the characteristics associated with the most avoided deforestation. We demonstrate how an understanding of these spatially heterogeneous responses to protection can be used to generate suitability maps that identify locations in which both environmental and poverty alleviation goals are most likely to be achieved. In the third chapter we address the mechanisms through which protected areas affect economic outcomes. Using recently developed quasi-experimental methods and rich biophysical and demographic data, we quantify the causal post-treatment mechanism impacts of tourism, infrastructure development and ecosystem services on poverty, due to the establishment of protected areas in Costa Rica prior to 1980. We find that nearly 50% of the poverty reduction estimated in a previous study can be attributed to tourism. In addition, although the mechanism estimates for the infrastructure and ecosystem services proxies are negligible, we argue that the results provide evidence that enhanced ecosystem services from the establishment of protected areas has likely helped to reduce poverty. The results provide additional information to policy makers that wish to enhance the future establishment of protected areas with complementary policy. The final chapter studies the economic impacts of protected areas in Bolivia. We find that municipalities with at least 10% of their area occupied by a protected area between 1992 and 2000 exhibited differentially greater levels of poverty reduction between 1992 and 2001 compared to similar municipalities unaffected by protected areas. We find that the results are robust to a number of econometric specifications, spillover analyses and a placebo study. Although the overarching results that Bolivia's protected areas were associated with poverty reduction are similar to previous studies , the underlying results are subtly, but significantly, different. In previous studies it was found that controlling for key observable covariates lead to fundamentally antithetical results compared to naive estimates. Conversely, these results indicate that naive estimates lead to an over-estimation of the poverty reducing impacts of protected areas. The results expose the heterogeneity of protected area impacts across countries and, therefore, underscore the importance of country-level impact evaluations in order to build the global knowledge base regarding the socioeconomic impacts of protected areas.

<p>The increased use of information disclosure in environmental policy raises questions of whether and how provision of information motivates changes in behavior. Accurate assessment of the value of information provision in reducing environmental risks requires understanding how actors respond to risk information. Chapter two examines the effects of disclosure of information on risk perception, knowledge about risks, and actions to mitigate risk from arsenic in private drinking well water. We conduct an experiment where we manipulate how information about the health risks posed by arsenic in drinking water is presented to users of private wells. This is one of the first field experiments to look at framing effects for long-term, latent environmental health risks. In contrast to much of the existing literature, we find that information frame does not affect risk perception or actions taken to address risk for low level of risk. </p><p>Chapter three examines how risk perceptions are affected by variations in risk communication, specifically addressing questions raised in the field experiment. We conduct an experiment about the health risks posed by arsenic in drinking water and introduce four manipulations in communication with experimental subjects: arsenic level, information framing, bright lines and relative risk. Chapter three suggests careful consideration must be taken in designing the disclosure of moderate levels of risk to ensure that information disclosure programs effectively convey health-based recommendations. Without these considerations, information disclosure programs may unwittingly and unnecessarily heightening concern among people facing moderate levels of risk. We consider this finding especially important because a broad number of environmental and environmental health risks that are currently unregulated pose moderate levels of risk. </p><p>The final chapter asks if the act of disclosing information changes the behavior of those who provide the information. Chapter four seeks to determine the degree to which information disclosure, in the form of TRI, results in improvements in environmental performance. Our work isolates the effect of information disclosure by using changes in the TRI reporting requirements to help identify the causal effect of disclosure from other potential explanations of changes in environmental performance. We find limited evidence that facilities newly reporting for a chemical have greater proportional decreases in total releases. The policy implications of Chapter 4 suggest that information disclosure should not be considered a substitute for regulation of toxic chemicals.</p> / Dissertation

This dissertation comprises two essays. The unifying theme is the evaluation of non-pecuniary (information or norm based messages) conservation programs. These types of policies are widely applied in developing and developed countries to promote conservation, however, their empirical evidence and their effectiveness are not well documented. Each chapter examines some methodological facets of the heterogeneity of non-pecuniary conservation programs and the reliability of non-experimental methods (program evaluation and econometric techniques) to evaluate treatment effects in the context of non-pecuniary conservation programs.

Chronic diseases place a substantial economic burden on the health care system. Physical inactivity, poor diet and smoking are considered to be the main causes of high rates of chronic disease. Evidence clearly supports the positive influence of physical activity on health determinants, other health outcomes and quality of life. This implies that an increase in physical activity improves general health status and has the potential to reduce utilization of expensive healthcare services and disability days. Earlier studies show that physical activity programs would be an effective way of providing preventive care for people with chronic conditions. However studies that relate physical activity programs to health care utilization are limited in economics literature.<p>The aim of this paper is to examine the impact of physical activity programs on healthcare utilization. From 2002 to 2003, adults over the age of 50 years, in a mid-size Canadian city, presenting with excess weight, type 2 diabetes, hypertension, hyperlipidemia or osteoarthritis were recruited. Following a screening process, eligible participants were randomly assigned to one of two programs: a class-based structured program or a home-based unstructured program. Validated questionnaires related to health status and quality of life were completed and physical tests were carried out at baseline, 3, 6, 12 months and 24 months after the program initiation. In addition participants use of physician and hospital services and pharmaceutical expenditures were accessed through their administrative data files for three years, one year before and two years after the intervention. Using administrative data from Sask Health and individual level survey data the effects of physical activity programs on health care utilization were estimated. The results showed that structured physical activity program can reduce annual physician costs significantly. The exponential effect of aging was found to be significant on hospital utilization, and the number of comorbidities was found to be significant on prescription drug utilization.

This study has the main objective of evaluating the effectiveness of the writing component of the program applied at the Department of Basic English (DBE) and the Department of Modern Languages (DML) at Middle East Technical University (METU) in the 2010-2011 academic year in terms of program objectives, materials and content, teaching-learning process and the assessment of the writing skills. The opinions of the DBE and DML instructors, program coordinators and students as well as the content course instructors at different departments at METU were mainly obtained via questionnaires and interviews. The data collected via the questionnaires were analyzed using SPSS 15 while the analysis of all the qualitative data was done though content analysis. The results of the questionnaires indicated that the writing components of the program at the DBE and the DML were generally effective as for the dimensions of the programs as specified in the research questions from the perspective of instructors and students. However, the qualitative data revealed participants&rsquo / suggestions for the improvement of the existing writing programs at both departments. Some of the major conclusions that can be drawn from DBE students&rsquo / and instructors&rsquo / suggestions are as follows: There is a need to switch the focus from discourse-level writing to more freewriting practices through more student-centered activities / the materials should be more visually attractive / the assessment procedure applied to test students&rsquo / writing ability in the mid-terms should be standardized and the writing tasks as tested in the English Proficiency Exam (EPE) should be focused on in writing classes. On the other hand, as for the writing program at the DML, the need for the diversification of the writing genres, topics and the citation rules covered in the ENG 101 and ENG 102 courses depending on students&rsquo / departments was emphasized by the DML participants. Similarly, DBE participants underlined the need for departmentrelated content in writing materials. Also, the content course instructors agreed that the writing program applied at the DBE and the DML should be department-specific. In other words, this study displayed the necessity to conduct a needs analysis aiming to reveal DBE and DML students&rsquo / writing needs for their departments.

Current demographics indicate that populations of color are on the rise across the United States. Although enrollments of students of color are increasing, first year retention rates are lower compared to their peers. Consequently, systemic changes are needed to produce changes in services and programs required by these students. Despite the modest gains in enrollment, students of color remain underrepresented at every degree level in higher education. Despite volumes of research, institutions still disregard the seriousness of the problem and continue to address retention with isolated programmatic approaches to change administrative, instructional, and advising practices with little evaluation. The purpose of this study was to develop an instrument assessing the organizational readiness of state and land-grant universities to retain students of color in colleges of agriculture as well as determine what definitions of retention were used to support existing retention programs and services. Since state and land-grant institutions previously engaged in retention strategies, an ex post facto study was conducted. A census of the population was conducted, where close to half of the population responded and expressed interest in seeing study results. State and land-grant colleges were selected as participants due to their unique inability to reach higher than average retention rates of students of color, specifically in agricultural fields. Statistical tests such as t-tests and analysis of variance were used to analyze data and further refine the instrument. Reliability for each of the instrument scales was high. However, further refining must be done before the instrument will more precisely indicate where gaps are in each readiness area in colleges of agriculture. This study determined that more information is needed on which definitions of retention are used to support programs and services within the college. Further investigation should be done to ascertain why more organizational diagnostic assessments are not done in this area considering the fiscal impacts on priorities such as retention. Although respondents indicated satisfaction with the college of agriculture to meet the academic needs of students, departmental administrators and faculty were still unclear of their role with retention. These findings indicate more research in this area should be conducted.

This dissertation identifies the average treatment effect of state level incentives for hybrid vehicles, identifies individual-level predictors of early adopters, and attempts to understand why states adopt these incentives. These questions are estimated using traditional parametric techniques, logistic regression, difference-in-difference regression, and fixed effects. In particular, this dissertation looks at changes in aggregate demand on two comparison groups: (1) the natural control group, states that did not adopt subsidies, and (2) a constructed control group, states that proposed subsidies during this same time period but did not adopt them. In addition to these parametric models, propensity score matching was used to construct a third comparison group using the models that identified determinants of the policy adoption. These findings were supplemented by exploratory analyses using the individual-level National Household Travel Survey. This multitude of evaluative analyses shows that HOV lane exemptions, if implemented in places with high traffic congestion, were found to impact aggregate demand and an individual's propensity to adopt a hybrid, while traditional incentives had limited impact. These analyses provide insight into why states adopt certain policies and the circumstances in which these incentives are effective. Since people may be motivated by factors other than economic factors, creating effective incentives for energy efficiency technologies may be more challenging than just offsetting the price differential. Instead, customization to the local community's characteristics could help increase the efficacy of such policies.