This dissertation makes use of several methodologies to explore topics ascribed to the field of development economics. Chapter 1 reviews the literature on social capital by presenting a decomposition of trust and networks -- the cognitive and the structural component of social capital, respectively--, in several sub-dimensions. One of this dimension is used in chapter 2 where we investigate, both theoretically and empirically, the role played by the cultural norm of particularism, as opposed to universalism, for collusive bribery. Consistent with the theory, particularism is found to have a positive causal effect on the probability of offering a bribe. Chapter 3 assesses the impact of a small-scale agricultural extension project implemented in rural Ethiopia aimed at introducing the cultivation of horticultural gardens. Empirically, a mixed impact evaluation design is used combining across-villages comparisons, through difference-in-differences estimations, with a within village randomized control trial. The findings indicate that the project contributes to production diversification while it does not influence total revenues from sales, household welfare and diet. Chapter 4 shows that similar incentivized mechanisms elicit similar decisions in terms of monetary risk aversion only if other risk-related attitudes are accounted for. Furthermore, it examines whether individuals' characteristics and a self-assessed measure of risk aversion relate to individuals' choices in lotteries. The findings suggest that there is some external validity of the two studied tasks as predictors of self-reported risk attitudes.
Questa tesi utilizza metodologie differenti al fine di esplorare argomenti generalmente ascritti all'economia dello sviluppo. Il primo capitolo discute la letteratura sul capitale sociale scomponendolo nel suo componente strutturale, le reti, e cognitivo, la fiducia. Ogni componente è a sua volta scomposto in diverse sotto-dimensioni una delle quali, il particolarismo, è utilizzato nel secondo capitolo, sia a livello teorico che empirico, come determinante di forme di corruzione collusiva. Come previsto dalla teoria, il particolarismo ha un effetto positivo e causale sulla probabilità di offrire una tangente. Il terzo capitolo valuta l'impatto di un progetto di estensione agricola realizzato in Etiopia, volto ad introdurre la coltivazione di nuovi prodotti ortofrutticoli insieme ad alcune tecniche e strumenti innovativi. Empiricamente si utilizzano gli strumenti della valutazione d’impatto combinando confronti tra villaggi, attraverso una stima difference-in-differences, con una comparazione all'interno del villaggio usando uno studio controllato randomizzato. I risultati indicano che il progetto ha contribuito alla diversificazione produttiva ma non ha influenzato i ricavi ottenuti dalla vendita dei prodotti ortofrutticoli e, di conseguenza, il benessere delle famiglie. Il quarto capitolo mostra come meccanismi incentivati sufficientemente simili elicitino decisioni correlate in termini di avversione al rischio solo quando si tengono in considerazione altri atteggiamenti relativi al rischio. Inoltre si studia la correlazione tra l'avversione al rischio riportata e l'avversione al rischio ottenuta tramite lotterie. I risultati suggeriscono una misurata validità esterna dei due metodi studiati.
ESSAYS ON DEVELOPMENT ECONOMICS
Rotondi, Valentina
2016
Abstract
This dissertation makes use of several methodologies to explore topics ascribed to the field of development economics. Chapter 1 reviews the literature on social capital by presenting a decomposition of trust and networks -- the cognitive and the structural component of social capital, respectively--, in several sub-dimensions. One of this dimension is used in chapter 2 where we investigate, both theoretically and empirically, the role played by the cultural norm of particularism, as opposed to universalism, for collusive bribery. Consistent with the theory, particularism is found to have a positive causal effect on the probability of offering a bribe. Chapter 3 assesses the impact of a small-scale agricultural extension project implemented in rural Ethiopia aimed at introducing the cultivation of horticultural gardens. Empirically, a mixed impact evaluation design is used combining across-villages comparisons, through difference-in-differences estimations, with a within village randomized control trial. The findings indicate that the project contributes to production diversification while it does not influence total revenues from sales, household welfare and diet. Chapter 4 shows that similar incentivized mechanisms elicit similar decisions in terms of monetary risk aversion only if other risk-related attitudes are accounted for. Furthermore, it examines whether individuals' characteristics and a self-assessed measure of risk aversion relate to individuals' choices in lotteries. The findings suggest that there is some external validity of the two studied tasks as predictors of self-reported risk attitudes.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.14242/159609
URN:NBN:IT:UNICATT-159609