occupational choice and the process of development this paper models economic development as a process of institutional transformation by focusing on the interplay between agents occupational decisions and the distribution of wealth because of capital market imperfections poor agents choose working for a wage over self employment and wealthy agents become entrepreneurs who monitor workers only with sufficient inequality however will there be employment contracts otherwise there is either subsistence or self employment thus in static equilibrium the occupational structure depends on distribution since the latter is itself endogenous we demonstrate the robustness of this result by extending the model dynamically and studying examples in which initial wealth distributions have long run effects in one case the economy develops either widespread cottage industry self employment or factory production employment contracts depending on the initial distribution in the other example it develops into prosperity or stagnation

status and poverty we present a model in which individuals preferences are defined over their consumption transfers to offspring and social status associated with income we show that a separating equilibrium exists where individuals expenditure on conspicuous consumption is a signal for their unobserved income in this equilibrium poor families that climb up the social ladder by the accumulation of wealth engage in conspicuous consumption that prevents them from escaping poverty our model may explain why the poor make some choices that do not appear to help them escape poverty jel d91 o11 o12 o15

saving rates and poverty the role of conspicuous consumption and human capital poor families around the world spend a large fraction of their income consuming goods that do not appear to alleviate poverty while saving at low rates we suggest that individuals care about economic status and interpret this behaviour as conspicuous consumption intended to provide a signal about unobserved income we show that if human capital is observable and correlated with income then a signalling equilibrium in which poor individuals tend to spend a large fraction of their income on conspicuous consumption can emerge this equilibrium gives rise to an increasing marginal propensity to save that might generate a poverty trap

revenue neutral tax policies under price uncertainty the firm s response to revenue neutral taxation is investigated under price uncertainty revenue neutral policies adjust simultaneously the marginal tax rate and the level of exemptions while keeping expected tax receipts constant nonincreasing absolute risk aversion is sufficient to sign the firm s response a reduction in the marginal rate causes the firm to contract output implications are established for the equilibrium level of treasury receipts

income distribution and macroeconomics this paper analyzes the role of wealth distribution in macroeconomics through investment in human capital it is shown that in the presence of credit markets imperfections and indivisibilities in investment in human capital the initial distribution of wealth affects aggregate output and investment both in the short and in the long run as there are multiple steady states this paper therefore provides an additional explanation for the persistent differences in per capita output across countries furthermore the paper shows that cross country differences in macroeconomic adjustment to aggregate shocks can be attributed among other factors to differences in wealth and income distribution across countries

salience and consumer choice we present a theory of context dependent choice in which a consumer s attention is drawn to salient attributes of goods such as quality or price an attribute is salient for a good when it stands out among the good s attributes relative to that attribute s average level in the choice set or more broadly the choice context consumers attach disproportionately high weight to salient attributes and their choices are tilted toward goods with higher quality price ratios the model accounts for a variety of disparate evidence including decoy effects and context dependent willingness to pay it also suggests a novel theory of misleading sales

a sparsity based model of bounded rationality this article defines and analyzes a sparse max operator which is a less than fully attentive and rational version of the traditional max operator the agent builds as economists do a simplified model of the world which is sparse considering only the variables of first order importance his stylized model and his resulting choices both derive from constrained optimization still the sparse max remains tractable to compute moreover the induced outcomes reflect basic psychological forces governing limited attention the sparse max yields a behavioral version of basic chapters of the microeconomics textbook consumer demand and competitive equilibrium i obtain a behavioral version of marshallian and hicksian demand arrow debreu competitive equilibrium the slutsky matrix the edgeworth box roy s identity and so on the slutsky matrix is no longer symmetric nonsalient prices are associated with anomalously small demand elasticities because the consumer exhibits nominal illusion in the edgeworth box the offer curve is a two dimensional surface rather than a one dimensional curve as a result different aggregate price levels correspond to materially distinct competitive equilibria in a similar spirit to a phillips curve the arrow debreu welfare theorems typically do not hold this framework provides a way to assess which parts of basic microeconomics are robust and which are not to the assumption of perfect maximization jel codes d01 d03 d11 d51

the return to capital in ghana we show that the real return to capital in ghana s informal sector is high for farmers we find annual returns ranging from 205 350 in the new technology of pineapple cultivation and 30 50 in well established food crop cultivation we also examine the relative prices of durable goods of varying durability and estimate a lower bound to the opportunity cost of capital of 60 this abstract was borrowed from another version of this item

cross country heterogeneity in intertemporal substitution abstract we collect 2735 estimates of the elasticity of intertemporal substitution in consumption from 169 published studies that cover 104 countries during different time periods the estimates vary substantially from country to country even after controlling for 30 aspects of study design our results suggest that income and asset market participation are the most effective factors in explaining the heterogeneity households in rich countries and countries with high stock market participation substitute a larger fraction of consumption intertemporally in response to changes in expected asset returns micro level studies that focus on sub samples of rich households or asset holders also find systematically larger values of the elasticity

gender and agricultural productivity implications of the farm input subsidy program in malawi alleviating gender differences in agricultural productivity is vital for poverty reduction while numerous studies suggest that gender differences in agricultural productivity are a result of female farmers having limited access to resources few studies investigate the role of agricultural interventions in alleviating the constraints to input use and subsequently the gender gap in productivity this study investigates whether there are gendered gains in agricultural productivity from participating in an input subsidy program and if these gains help reduce the gender gap using nationally representative data that is disaggregated at the plot level this study analyzes the large scale voucher based farm input subsidy program in malawi focusing on the total value of output per hectare relationships are identified using weighted estimators where the weights are constructed from propensity scores and spatial fixed effects to address the unobservable factors that may confound the relationship between program participation and productivity the findings suggest that participation in the program improves agricultural productivity for both male and female farmers but it does not provide disproportionate help to female famers to overcome gender disparities in agricultural productivity this suggests that female farmers face additional constraints to productivity apart from nonlabor input use

poverty and self control we argue that poverty can perpetuate itself by undermining the capacity for self control in line with a distinguished psychological literature we consider modes of self control that involve the self imposed use of contingent punishments and rewards we study settings in which consumers with quasi hyperbolic preferences confront an otherwise standard intertemporal allocation problem with credit constraints our main result demonstrates that low initial assets can limit self control trapping people in poverty while individuals with high initial assets can accumulate indefinitely thus even temporary policies that initiate accumulation among the poor may be effective we examine implications concerning the effect of access to credit on saving the demand for commitment devices the design of financial accounts to promote accumulation and the variation of the marginal propensity to consume across income from different sources we also explore the nature of optimal self control demonstrating that it has a simple and behaviorally plausible structure that is immune to self renegotiation

revenue neutral tax policies under price uncertainty comment in an interesting paper in this journal holloway investigated the firm s response to revenue neutral taxation under price uncertainty in his analysis revenue neutral policies adjust simultaneously the marginal tax rate and the level of exemptions while keeping expected tax receipts constant using an assumption of nonincreasing absolute risk aversion he concluded that a reduction in the marginal rate would cause the firm to contract output holloway used the 1986 tax reform act as an example of a revenue neutral policy as a matter of fact the act was intended to be revenue neutral while low

a model of focusing in economic choice we present a generally applicable theory of focusing based on the hypothesis that a person focuses more on and hence overweights attributes in which her options dier more our model predicts that the decisionmaker is too prone to choose options with concentrated advantages relative to alternatives but maximizes utility when the advantages and disadvantages of alternatives are equally concentrated in intertemporal choice because the relative concentrations of an option s costs and benets can be dierent from the perspective of a single period and the perspective of the entire choice problem the decisionmaker often exhibits a form of time inconsistency she is present biased when the costs of current misbehavior are distributed over many future dates such as in harmful consumption but future biased when the benet of many

minding small change among small firms in kenya abstract many micro enterprises in kenya have low productivity we focus on one particular business decision which may indicate low productivity keeping enough change on hand to break larger bills this is a surprisingly large problem our estimates suggest that the average firm loses approximately 5 8 of total profits because they do not have enough change we conducted two experiments to shed light on why this happens surveying firms weekly about lost sales thereby increasing the salience of change and explicitly informing firms about lost sales we find that both interventions significantly altered change management and reduced lost sales this largely rules out many potential explanations such as the risk of theft or the costs of holding change being too high one explanation consistent with firms response to the survey and information on their lost sales is that firms were not perfectly attentive to change management prior to the interventions

focusing effect and the poverty trap abstract i build a dynamic consumption savings model in which agents choices are distorted by the focusing effect agents overweight the utility of goods in which their options differ more i show that the consumption savings choice depends both on the marginal return on savings and on the total return on savings implying that the incentive to save may increase with the initial level of wealth as a consequence a salience based poverty trap may exist when the marginal return on savings is sufficiently high and sufficiently flat i also consider the case of a perfect credit market and show that a poverty trap may emerge when the salience of consumption is bounded above i discuss policy implications in particular imposing upon an agent a punishment for decreasing savings below a threshold leads to a higher level of savings even when the threshold triggering the punishment is not binding

nudging farmers to use fertilizer theory and experimental evidence from kenya we model farmers as facing small fixed costs of purchasing fertil izer and assume some are stochastically present biased and not fully sophisticated about this bias such farmers may procrastinate post poning fertilizer purchases until later periods when they may be too impatient to purchase fertilizer consistent with the model many farmers in western kenya fail to take advantage of apparently profit able fertilizer investments but they do invest in response to small time limited discounts on the cost of acquiring fertilizer free deliv ery just after harvest calibration suggests that this policy can yield higher welfare than either laissez faire policies or heavy subsidies

income distribution and macroeconomics the persistence of inequality in a convex technology framework i show that non convexities in technology assumed in the capital market imperfection literature on the relationship between income distribution and economic development can be replaced by an assumption that the bequest function is convex with respect to income 2002 elsevier science b v all rights reserved

location and the theory of the imperfectly competitive firm under demand uncertainty there is a large and growing literature on location and the theory of the firm in a heterogeneous space i e in the space where markets are given at discrete points such as weber 22 isard 7 moses 15 sakashita 18 19 bradfield 3 emerson 5 woodward 23 khalili mathur and bodenhorn 8 miller and jensen 14 mathur 13 eswaran kanemoto and ryan 6 and mai and shieh 11 what is perhaps surprising is that within this large body of literature nothing has been said about how the firm would and should locate theoretically under conditions of uncertainty it only with webber 21 and mai 10 that any real indication is given that uncertainty due to imperfect market information may exert an influence on locational choice in particular mai 10 presented a formal mathematical model to show that the results and implications of the optimum location of the firm under demand uncertainty is different from that applicable to the state of certainty however mai s analytical framework is restricted to the case of pure competition where price is given all buyers are assumed to be concentrated at given market point and each firm seeks to minimize expected cost and is thus risk neutral the purpose of this paper is to extend the location theory of the competitive firm under demand uncertainty to the case where the imperfectly competitive quantity setting firms are not risk neutral and are interested in maximizing expected utility from profit including cost and demand factors 2 this expected utility approach will provide a more general formulation of the firm s attitude toward risk for analyzing its location decisions the basic model evaluating the firm s location and input choices is presented in section ii section iii examines the overall impacts of demand uncertainty on the optimum location and input demands the effect of a marginal increase in demand uncertainty on the optimum location is investigated in section iv section v analyzes the effect on the optimum location of a change in the expected output price section vi then evaluates the

limited attention and income distribution economists have long been interested in the idea that there is a direct circular relation between poverty and low productivity and not just one that is mediated by market failures usually in asset markets the nutrition based efficiency wage model partha dasgupta and debraj ray 1987 is the canonical example of models where this happens however it has been variously suggested see for example t n srinivasan 1994 that the link from nutrition to productivity and especially the link from productivity to nutrition is too weak to be any more than a small part of the story partha dasgupta himself acknowledges this when he writes nutrition productivity construct provides a metaphor for an economic environment harboring poverty traps partha dasgupta 1997 page 5 we propose an alternative approach to this question based on the idea that attention is a scarce resource that is important for productivity specifically people may not be able to fully attend to their jobs if they are also worrying about problems at home and being distracted in this way reduces productivity but not paying attention at home is also costly early symptoms of a child s sickness may go unnoticed water may run out at the end of the day kerosene for lighting lamps at home might run out and make it hard to do homework etc finally the extent to which home life distracts depends on the nature of home life specifically certain goods e g a good baby sitter a 24 hour piped water supply a connection to a power supply grid can reduce the extent of home life distraction these three assumptions generate an interesting relation between income and productivity that is at the core of our model the non poor in this model by virtue of owning distraction saving goods and services at home are able to focus more on their work hence they will be more productive at work and will be able to afford more distraction saving goods this simple two way relationship between in this abstract was borrowed from another version of this item

fixed costs sunk costs entry barriers and sustainability of monopoly this paper shows that i fixed costs of sufficient magnitude assure the existence of a vector of sustainable prices for the products of a natural monopolist prices making him invulnerable against entry ii nevertheless fixed costs do not constitute barriers to entry that is they need not have undesirable welfare consequences iii indeed in market forms that we call perfectly contestable large fixed costs are completely compatible with many desirable attributes of competitive equilibrium iv sunk costs do however constitute barriers to entry and v finally the profit and welfare consequences of entry barriers are described formally in this paper it is shown that i fixed costs of sufficient magnitude assure the existence of a vector of sustainable prices a set of product prices that make a natural monopolist invulnerable against successful entry ii nevertheless costs that are truly fixed do not constitute barriers to entry that is they do not have the welfare consequences normally attributed to barriers to entry iii indeed there are markets of a form which we call perfectly contestable markets and whose properties may be approximated in practice in which large fixed costs are completely compatible with many if not most of the desirable attributes of competitive equilibrium iv sunk costs do however constitute barriers to entry and v finally the resource allocation problems that stem from fixed costs are formally identical with those that accompany public goods both their sources and their character are the same thus the rationale for public supply of public goods may be no different from that pertaining to nationalization of natural monopolies

implications of rational inattention abstract a constraint that actions can depend on observations only through a communication channel with finite shannon capacity is shown to be able to play a role very similar to that of a signal extraction problem or an adjustment cost in standard control problems the resulting theory looks enough like familiar dynamic rational expectations theories to suggest that it might be useful and practical while the implications for policy are different enough to be interesting