bulls bears and market sheep abstract a deterministic excess demand model of stock market behavior is presented that generates stochastically fluctuating prices and randomly switching bear and bull markets

the consumption response to predictable changes in discretionary income evidence from the repayment of vehicle loans abstract although the life cycle permanent income hypothesis is the primary framework for understanding household consumption and savings decisions only a few studies have used clearly identifiable income changes to test the basic predictions of the model the estimates produced using this empirical strategy have yet to lead to a consensus of beliefs since the results have both favored and rejected the model this paper contributes to this literature by examining the consumption reaction to predictable increases in discretionary income following the final payment of a vehicle loan using data from the consumer expenditure survey the results show that a 10 increase in discretionary income due to a loan repayment leads to a 2 to 3 increase in nondurable consumption additional analysis suggests that these findings may be explained by the presence of borrowing constraints

targeting maps an asset based approach to geographic targeting summary proper targeting of policy interventions requires reasonable estimates of the benefits of the alternative options to inform such decisions we develop an integrated approach stemming from the small area estimation literature that estimates the marginal returns to a range of assets across geographically defined subpopulations we create a series of maps that can be overlaid with traditional poverty maps to identify strong candidate areas for intervention though an efficiency equity tradeoff sometimes exists we apply our method using recent ugandan data results are consistent with independent empirical findings and suggest asset specific transfer schemes would improve with a spatially targeted strategy

money and financial markets introduction money and financial markets mark p taylor part 1 assessing the literature money demand analysis an outline keith cuthbertson david barlow financial market analysis an outline ronald macdonald and mark p taylor part 2 money demand studies money demand in five major countries estimating and interpreting error correction models james m boughton modelling broad and narrow money a study using cointegration martin brookes et al endogenous financial innovation and the demand for mo peter westaway and david walton money demand in high inflation countries a south american perpsective kate phylakis and mark p taylor the demand for money in four countries in the interwar period a study using monthly data jonathan slow et al part 3 money and financial markets some news on covered interest arbitrage mark p taylor patricia fraser monitoring bank risk a market based approach david miles stephen hall information interest rates and the volatility of asset prices laurence copeland richard c stapleton the decision to disclose research and development expenditure in the presence of a takeover threat jane black ian tonks persistence in stock market returns a disaggregated perspective roanld macdonald david power global capital market integration and the current account michael artis tamim bayoumi financial disorder and the theory of crisis e p davis part 4 new directions in financial market analysis neural networks and asset prices paul ormerod chartists fundamentalists and the transmission of opinion alan kirman

household saving micro theories and micro facts in this survey we review the recent theoretical and empirical literature on household saving and consumption the discussion is structured around a list of motives for saving and how well the standard theory captures these motives we show that almost all of the motives for saving that have been suggested in the informal saving literature can be captured in the standard optimizing model particular attention is given to recent work on the precautionary motive and its implications for saving and consumption behavior we also discuss the behavioral or psychological approach that eschews the use of standard optimization techniques and focuses instead on direct consideration on saving we provide a section on facts who save and how much we then discuss informally the recent decline in the u s saving rate and whether the theory is of much use in understanding this and other changes in aggregate saving rates over time we do not find any convincing explanation for the change in saving rates we also discuss some analyses of saving behavior over the life cycle addressing such questions as whether households save enough for retirement and whether the consumption patterns of older households can be rationalized within a simple life cycle model we also review a great number of studies of the consumption euler equations based on our analysis of the studies cited we conclude that there is still mixed evidence that consumption is excessively sensitive to income we also examine in depth the recent empirical literature on the precautionary motive we conclude that although some households do seem to have a significant precautionary motive at some points in their life cycle this motive is not so strong empirically as some investigators suggest

intrahousehold allocation of free and purchased mosquito nets for some health goods intrahousehold allocation may be more important in determining outcomes than household level consumption an example is the use of mosquito nets to prevent malaria malaria kills over one million people annually 90 percent of them children under the age of five the use of insecticide treated mosquito nets itns is considered the most costeffective available strategy for control of the disease in 2000 44 of the 50 malaria affected countries in africa committed themselves to increasing the use of itns by vulnerable populations in particular children under five years of age and pregnant women adults in malarious regions have typically acquired some immunity to the disease through repeated exposure over the course of their lives the risk of severe malaria resulting in lifelong disability or death is highest for young children and pregnant women across transmission environments robert w snow et al 2003 on the other hand lost labor time often accounts for the largest portion of the private cost of the disease this implies a trade off between minimizing the income lost to malaria and minimizing the risk that a household member dies or is permanently disabled despite public health messages emphasizing the importance of using mosquito nets to protect young children from malaria nets are often used by adults when a household does not have enough nets to cover all members eline l korenromp et al 2003 frederick mugisha and jacqueline arinaitwe 2003 determining the welfare maximizing allocation of nets is intrahousehold allocation of free and purchased mosquito nets

do free goods stick to poor households experimental evidence on insecticide treated bednets summary if the market allocates goods to those willing and able to pay the most for them efforts to target durable health goods such as insecticide treated bednets itns to poor populations may prove ineffective with the poor reselling donated goods to the non poor who value them more highly however low market demand may be due to liquidity constraints rather than low valuation of nets the endowment effect also militates against the resale of in kind transfers we quantify these two effects through a field experiment in uganda our results indicate that very few nets will be resold by recipient households

commodity markets price limiters and speculative price dynamics abstract we develop a behavioral commodity market model with consumers producers and heterogeneous speculators to characterize the nature of commodity price fluctuations and to explore the effectiveness of price stabilization schemes within our model we analyze how nonlinear interactions between market participants can create either bull or bear markets or irregular price fluctuations between bull and bear markets through a global homoclinic bifurcation both the imposition of a bottoming price level to support producers or a topping price level to protect consumers can eliminate such homoclinic bifurcations and hence reduce market price volatility however simple policy rules such as price limiters may have unexpected consequences in a complex environment a minimum price level decreases the average price while a maximum price limit increases the average price in addition price limiters influence the price dynamics in an intricate way and may cause volatility clustering

information branding certification and consumer willingness to pay for high iron pearl millet evidence from experimental auctions in maharashtra india abstract in this paper we use hedonic testing methods adopted from food science literature and the becker degroot marschak mechanism adopted from economic valuation literature to estimate consumer demand for biofortified high iron pearl millet hipm in maharashtra india unlike biofortification with provitamin a biofortification with minerals such as iron and zinc does not change the color or the appearance of the biofortified crop therefore we test the impact of both nutrition information and branding and certification as well as the nature of the brand and of the certifying authority state level versus international on consumer demand for hipm we find that even in the absence of nutrition information consumers assign a small but significant premium to the hipm variety relative to the local variety this is consistent with consumers more favorable rating of the sensory characteristics of the high iron variety nutrition information on the health benefits of hipm increases this premium substantially and regression analysis reveals that consumers prefer international branding and international certification authority to their state level counterparts

do intra household effects generate the food stamp cash out puzzle previous empirical studies have noted the higher marginal propensity to consume food out of food stamps in the united states compared to that out of cash income analyzing data from u s food stamp program participants we find evidence that this discrepancy may be driven primarily by the behavior of multiple adult households single adult households show no evidence of any discrepancy thus our results suggest that food stamp and cash income welfare or market may have very different impact on the intra household allocation process and that this is reflected empirically in the cash out puzzle

speculative behaviour and complex asset price dynamics a global analysis this paper analyses the dynamics of a model of a share market consisting of two groups of traders fundamentalists who base their trading decisions on the expectation of a return to the fundamental value of the asset and chartists who base their trading decisions on an analysis of past price trends the model is reduced to a two dimensional map whose global dynamic behaviour is analysed in detail the dynamics are affected by parameters measuring the strength of fundamentalist demand and the speed with which chartists adjust their estimate of the trend to past price changes the parameter space is characterized according to the local stability instability of the equilibrium point as well as the non invertibility of the map the method of critical curves of non invertible maps is used to understand and describe the range of global bifurcations that can occur it is also shown how the knowledge of deterministic dynamics uncovered here can aid in understanding the behaviour of stochastic versions of the model

stabilizing chaos in a dynamic macroeconomic model abstract within a macroeconomic disequilibrium model it turns out that stationary and simple adaptive policies are not capable of stabilizing efficient steady states and lead to periodic or irregular fluctuations for large sets of policy parameters the application of recent control methods for chaotic dynamical systems shows that the government can in principle stabilize an unstable walrasian equilibrium in a short time by varying income tax rates or government expenditures different stabilizing policies are analyzed and compared with regard to their efficiency

eliciting and utilizing willingness to pay evidence from field trials in northern ghana we utilize the becker degroot marschak 1964 mechanism to estimate the willingness to pay for clean drinking water technology in northern ghana the bdm mechanism has attractive properties for empirical research allowing us to directly estimate demand compute heterogeneous treatment effects and study the screening and causal effects of prices with minor modifications to a standard field experiment setting we demonstrate the implementation of bdm along these three dimensions compare it to the standard take it or leave it method for eliciting willingness to pay and discuss practical issues for implementing the mechanism in true field settings jel classifications c93 d12 d82 l11 l31

the demand for a malaria vaccine evidence from ethiopia this study measures the monetary value households place on preventing malaria in tigray ethiopia we estimate a household demand function for a hypothetical malaria vaccine and compute the value of preventing malaria as the household s maximum willingness to pay to provide vaccines for all family members this is contrasted with the traditional costs of illness medical costs and lost productivity our results indicate that the value of preventing malaria with vaccines is about us 36 per household per year or about 15 of imputed annual household income this is on average about twice the expected household cost of illness

the illusion of sustainability this brief summarizes the results of a gender impact evaluation study entitled the illusion of sustainability conducted during the time period 1998 to 2001 in kenya the study observed that deworming is a public good since much of its social benefit comes through reduced disease transmission people were less likely to take deworming if their direct first order or indirect second order social contacts were exposed to deworming the introduction of a small fee for deworming drugs led to an 80 percent reduction in treatment rates take up was not sensitive to the exact price level suggesting that it is particularly counter productive to charge small positive prices for the treatment of infectious diseases an intensive school health education had no impact on worm prevention funding for the study derived from world bank nih fogarty international center berkeley center for health research

information and consumer willingness to pay for biofortified yellow cassava evidence from experimental auctions in nigeria in this article we use the becker degroot marschak mechanism to estimate consumer demand for biofortified yellow cassava varieties in two states of nigeria imo in the southeast and oyo in the southwest these two states exhibit distinct habitual product color preferences for staple food made with cassava we estimate the effect of nutrition information campaigns and nature of planting material delivery institutions on consumer demand willingness to pay estimations account for the effect of product endowment censoring in bids and nonpayment in oyo consumers are willing to pay a premium for light yellow cassava variety even in the absence of nutrition information the article finds that nutrition information results in a large and significant price premium for biofortified cassava in both states and the nature of delivery institution has no significant effect

the use of technical analysis in the foreign exchange market abstract technica or chartist analysis of financial markets involves providing forecasts or trading advice on the basis of largely visual inspection of past prices without regard to any underlying economic or fundamental analysis this paper reports the results of a questionnaire survey conducted on behalf of the bank of england among chief foreign exchange dealers based in london in november 1988 amongst other findings it is revealed that at least 90 per cent of respondents place some weight on this form of non fundamental analysis when forming views at one or more time horizons there is also a skew towards reliance on technical as opposed to fundamentalist analysis at shorter horizons which becomes steadily reversed as the length of horizon considered is increased a very high proportion of chief dealers view technical and fundamental analysis as complementary forms of analysis and a substantial proportion suggest that technical advice may be self fulfilling jel f31

preference heterogeneity power and intrahousehold decision making in rural malaysia abstract this paper examines conjugal household responsibilities roles preference heterogeneity and intrahousehold power relations in rural malay families its three major contributions are to provide an effective initial indicator of separate spheres within the family develop and implement a method for measuring the extent of conjugal preference heterogeneity and illustrate the value of combining this direct measure of preference heterogeneity with a measure of power in estimating household expenditure patterns for three major items food schooling and housing improvement these three measurement innovations applied to the rural malaysia context demonstrate the potential for more direct efforts to model and measure intrahousehold decisions

exchange rate dynamics central bank interventions and chaos control methods abstract we use a simple chartist fundamentalist model developed by day and huang to explore recent chaos control algorithms as potential candidates for central bank intervention rules we find that methods such as delayed feedback control ogy and constant feedback have in principle the potential to reduce exchange rate variability and deviations from fundamentals even in the presence of large dynamic noise

speculative markets and the effectiveness of price limits abstract the aim of this paper is to study the effectiveness of price limits in speculative markets we construct a nonlinear stochastic asset pricing model in which traders rely on technical and fundamental analysis to determine their orders the dynamics of the model mimic stylized facts such as the emergence of bubbles excess volatility fat tails for returns or volatility clustering quite well using this model as a laboratory we find that price limits have the potential to reduce both volatility and deviations from fundamentals the more traders lend themselves to trend extrapolating behavior the better price limits work

the life cycle model of consumption and saving a central implication of life cycle models is that agents smooth consumption we review the empirical evidence on smoothing at frequencies from within the year up to across a lifetime we find that life cycle models particular those which incorporate realistic features of markets and goods have more empirical successes than failures we also show that some apparent deviations from theoretical predictions imply very small welfare losses for agents finally we emphasize that the coherence of life cycle models imposes an important discipline when incorporating new features into models

a theory of commodity price fluctuations this paper studies the price fluctuations of storable commodities that are traded in open markets and are subject to random shocks to demand or more particularly to supply it relaxes the common assumption that the shocks are identically and independently distributed in favor of temporally dependent and periodic disturbances the existence of a unique stationary rational expectations equilibrium is demonstrated for each of the models analyzed and testable implications of the models are derived an illustrative empirical investigation is then undertaken for the model with periodic disturbances using monthly time series observations for seven commodities over the period 1960 93

the relative size of windfall income and the permanent income hypothesis a reconciliation is offered for the diverse test results on friedman s permanent income hypothesis a large data sample of those receiving windfall income in the bureau of labor statistics 1972 1973 consumer expenditure survey is divided according to the size of the windfall relative to estimated permanent income a pattern of a declining marginal propensity to consume windfall income as the relative size of the windfall increases is apparent these results support the permanent income hypothesis for relatively large windfalls

intra household resource allocation an inferential approach if household income is pooled and then allocated to maximize welfare then income under the control of mothers and fathers should have the same impact on demand with survey data on family health and nutrition in brazil the equality of parental income effects is rejected unearned income in the hands of a mother has a bigger effect on her family s health than income under the control of a father for child survival probabilities the effect is almost twenty times bigger the common preference or neoclassical model of the household is rejected if unearned income is measured with error and income is pooled then the ratio of maternal to paternal income effects should be the same equality of the ratios cannot be rejected there is also evidence for gender preference mothers prefer to devote resources to improving the nutritional status of their daughters fathers to sons

using the travel cost method to value visits and stigma in connection with arv adherence in uganda abstractthis article uses the travel cost method to value both client visits to collect antiretroviral therapy arv and stigma which prevents arv adherence using a representative sample for uganda initiated specifically for this study we found a willingness to pay wtp valuation for visits made in the range of us 14 us 17 and a willingness to accept wta valuation of us 25 for visits missed the valuations for stigma based on a novel measure of stigma using a new estimation method were close to the valuations for visits these valuations can be used to estimate the benefits to carry out cost benefit analyses cbas of interventions aimed at increasing arv coverage and adherence

using an economic experiment to estimate willingness to pay for a new maternal nutrient supplement in ghana scaling up access to supplements designed to prevent undernutrition such as new small quantity lipid based nutrient supplements sq lns may require distribution via both public channels and retail markets the viability of sq lns retail markets will hinge on household level demand we use an economic experiment to characterize initial willingness to pay wtp for a maternal sq lns product in ghana wtp is positive for most participants though below the estimated cost of production for many wtp varies depending on income assets and parity status these findings have implications for the design of public health policy and hybrid public private delivery mechanisms

group versus individual liability short and long term evidence from philippine microcredit lending groups abstract group liability in microcredit purports to improve repayment rates through peer screening monitoring and enforcement however it may create excessive pressure and discourage reliable clients from borrowing two randomized trials tested the overall effect as well as specific mechanisms the first removed group liability from pre existing groups and the second randomly assigned villages to either group or individual liability loans in both groups still held weekly meetings we find no increase in short run or long run default and larger groups after three years in pre existing areas and no change in default but fewer groups created after two years in the expansion areas