Impacts of monetary and macroeconomic factors on food prices in eastern and southern Africa

Eastern and southern Africa has been experiencing relatively large increases in real food prices since the early 1980s. Real food prices in some African countries grew as much as 11% per year during the 1980-1996 period. The huge volatility in food prices coincided with the implementation of structural adjustment programmes in several African countries. This study examines the impacts of monetary and macroeconomic factors on real food prices in eastern and southern Africa. Using the technique of cointegration and error correction modelling to test the long-run relationship between real food prices and the factors that influence their behaviour in selected African countries. Demand elasticities for food are estimated for selected countries. The empirical results show that changes in domestic food production, coupled with income, trade, exchange rate and monetary policies have significant impacts on real food prices, with wide implications for food availability and food security in the region.     

Malthus in Sweden

This paper presents some new and unique cross‐county data from 19th‐century Sweden over birth, death, and marriage rates, grain prices, and harvests. Local grain prices correlate negatively with local harvests, suggesting imperfectly integrated food markets. The so‐called positive and preventive checks are also present: good local harvests are associated with high birth and marriage rates, and low death rates. We also find that the fertility and marriage effects from changes in prices – but not harvests – are greater in counties that rely more on manufacturing, consistent with an open‐economy model of fertility choice, where agents earn income from both agriculture and manufacturing.     

Tobin's Q channel and monetary policy rules under incomplete exchange rate pass-through

This paper focuses on the role of the Tobin's Q channel in a two-country framework in which exporting firms set their prices on the basis of local currency pricing. Incomplete exchange rate pass-through significantly affects the Tobin's Q channel in each country compared with the case of complete exchange rate pass-through. We explore whether different specifications of monetary policy enhance social welfare. Regardless of the degree of home bias, a monetary policy rule that stabilizes domestic asset prices attains preferable outcomes to several alternative policy rules considered in our analysis. Notably, there are large gains from employing a domestic asset price rule when the home bias is large. A monetary policy rule that stabilizes the asset prices of both countries results in worse outcomes. Our simulation results suggest that stabilizing asset prices is important in an open economy with incomplete exchange rate pass-through.     

Housing prices and son preference: Evidence from China’s housing reform

Do high housing prices reduce the demand for sons? As Chinese parents need to acquire houses for their sons’ marriage, high housing prices increase the cost of sons relative to daughters. We exploit China's housing reform in the 1990s as a natural experiment to identify the effect of housing prices on demand for sons. We find that housing prices have no effect on the probability of having a son at the first birth. High housing prices reduce the probability of having a son at the second birth, especially when the first-born is a daughter. A 10% increase in housing prices reduces the probability of having a son at the second birth by 0.78 percentage points. The findings remain robust when using aggregate prefecture-cohort data for the post-reform period.     

Long-Period Trade Elasticities for Canada, Japan, and the United States

Most analyses of imports use brief, postwar samples and offer a large range of elasticity estimates suggesting that the role of income and prices in determining imports is not known with any precision. This paper offers an analysis of that role using data since 1890 for Canada, Japan, and the United States. The elasticities of the log–linear model are estimated and found to be inconsistent with the view that income and prices affect imports. Optimization models are considered and found to predict secular changes in income and price elasticities and explain the dispersion of estimates of the literature.     

Are natural gas spot and futures prices predictable?

We answer two questions concerning natural gas spot and futures prices. The first is: Can natural gas futures prices predict natural gas spot prices? The second is: Are natural gas spot and futures prices weak form efficient or can they be predicted based on examination of historical data? To answer these questions, we use daily data for Henry Hub natural gas spot and futures prices. Our answer to the first question is that natural gas futures prices do not predict the magnitude of future natural gas spot prices any better than what would be predicted by a random walk model. This result has important implications for many financial analysts and policy institutions that have used commodity futures prices to predict movements in spot prices. The answer to the second question is that when we apply a unit root test that allows for heteroskedasticity and two structural breaks, natural gas spot and futures prices are predictable. We then simulate a contrarian trading strategy for spot and futures prices to show under what circumstances trading in spot and futures prices are also profitable. The results point to the need to accommodate heteroskedasticity when applying unit root tests to model energy spot and futures prices with high-frequency data, such as daily data.     

Household coping in war- and peacetime: Cattle sales in Rwanda, 1991–2001

The economic literature has given due attention to household coping strategies in peacetime. In contrast, little is known about such strategies in wartime. This paper studies the use of cattle as a buffer stock by Rwandan households during 1991–2001, a period characterized by civil war and genocide. It is found that the probability of selling cattle increases upon the occurrence of both peacetime and wartime covariant adverse income shocks. The peacetime cattle sales are largely explained by shifts in the household asset portfolio. In contrast, in 1994, the year of the genocide, almost half of the cattle sales were motivated by the need to buy food. However, we argue that the effectiveness of this coping strategy was severely reduced due to the wartime conditions. First, during the year of ethnic violence, cattle prices plummeted to less than half of their pre-genocide value. Second, we find that households most targeted in the violence did not sell cattle. We discuss several explanations for this latter finding.     

Childcare quality and pricing: evidence from Wisconsin

Childcare prices vary dramatically both between and within states. We identify the effects of demographic and provider characteristics on childcare pricing, but focus primarily on whether unique government-provided information on childcare quality has an effect on pricing. Using provider-level observations across three adjacent counties in southern Wisconsin, we find that this government-provided information on childcare quality does not significantly affect pricing. Recognizing that information asymmetry may be the root cause of the insignificant relationship, we test the relationship further within multiple subsamples and with alternative models. Only the lowest quality childcare providers are significantly associated with lower prices in areas that we hypothesize suffer from greater information asymmetry.     

Persistence of gender inequality: the role of ethnic divisions

Gender inequality remains a fundamental challenge for global policymakers given that it has detrimental implications for growth and human capital formation. However, studies examining the roots of gender inequality, and what determines the level of inequality are relatively scant. In this study, we seek to contribute to the literature that examines the roots of gender inequality and thus, our objective is to examine the impact of ethnic diversity on gender inequality. We argue that the level of ethnic diversity within a country plays a role in either deepening or bridging gender gaps. Using indices of ethnic fractionalization, we examine the effects of ethnic diversity on measures of gender inequality such as the gender inequality index, and its associated dimensions of empowerment, educational attainment and labour market outcomes. Our evidence suggests that ethnic diversity widens existing gender gaps. We discuss several mechanisms through which ethnic diversity may lead to the increase of existing gender gaps, and lay out various policy approaches to address gender inequality.     

Joint search for several goods

Joint search occurs when a buyer incurs a single cost to observe prices of several different goods. If the prices are drawn from a known joint distribution function, the optimal sequential strategy with no recall uses a reservation sum for any subset of items. When the observed prices total more than the corresponding reservation sum, not all goods will be bought and search continues for items not purchased. Thus, regions in the price space are associated with various buy-search decisions. The reservation sums, however, have properties analogous to those of the reservation price with search for one good.     

Viscous demand

In many markets, demand adjusts slowly to changes in prices, i.e., demand is “viscous”. This viscosity gives each firm some monopoly power, since it can raise its price above that of its competitors without immediately losing all of its customers. The resulting equilibrium pricing behavior and market outcomes can differ significantly from what one would predict in the absence of demand viscosity. In particular, the model explains the importance of market share as an investment, as well as “kinked demand curves”. It also explains how apparently “competitive” pricing behavior can lead to outcomes that mimic those of collusion.     

Monopoly Price Dispersion Under Demand Uncertainty

When a monopolist sets its price before its demand is known, then it may set more than one price and limit the availability of its output at lower prices. This article adds demand uncertainty and price rigidities to the standard model of monopoly pricing. When there are two states of demand and the ex post monopoly price is greater when demand is high then the monopolist's optimal ex ante pricing strategy is to set two prices and limit purchases at the lower price.     

Global capital markets,housing prices,and partisan fiscal policies

In recent years, global imbalances have channeled the excess savings of surplus countries toward the real estate markets of deficit countries. By consequence, the deficit countries that attracted lots of foreign capital experienced large run‐ups in house prices, whereas most surplus countries that exported capital exhibited flat or slow house price growth. We first use new house price data and a novel instrumental variable design to show the causal relationship between housing prices and capital inflows, particularly through debt bonanzas. We then argue that international capital flows affect the fiscal policy preferences of both voters and political parties by way of their impact on housing prices. Where capital inflows are large and housing prices are rising, we expect voters to respond by demanding both lower taxes and less publicly‐provided social insurance because rising house prices allow homeowners to self‐insure against income loss. In contrast, declining house prices produce greater demands for social insurance, particularly among those most exposed to housing market risk. We present evidence from two cross‐national surveys that supports these claims, as well as a “before and after” analysis of the housing crash in Eastern Europe. We also show that the connection between house prices and social policy also manifests itself in government spending outcomes, mediated by partisan control.     

The Ethnic Employment and Income Gap in Sweden: Is Skill or Labor Market Discrimination the Explanation?*

This study uses a cognitive test score, the Swedish Military Enlistment test taken at age 18, to identify whether the ethnic employment and income gap in Sweden is caused by a pre‐market skill gap and/or ethnic discrimination. The employment gap and income gap are estimated for males born in Sweden with different ethnic backgrounds: their parents were born in Sweden or in southern Europe or outside Europe. Controlling for the cognitive test score does not affect the ethnic employment gap, and for incomes the ethnic income gap almost disappears.     

ETHNIC ENCLAVES AND LABOR MARKETS: AN ANALYSIS OF IMMIGRANT OUTCOMES IN CALIFORNIA

The goal of this article is to examine how immigrant enclaves influence labor market outcomes. We examine the effect of ethnic concentrations on earnings in the state of California. Individual-level wage equations that control for several observable human capital and demographic characteristics are estimated. In addition, we introduce a measure that captures an ethnic group's proportion of the metropolitan area population. In general, we find that any potentially positive enclave effects are likely to be offset by negative labor market competition effects. In particular, most enclave effects become insignificant after controlling for metro area–specific effects . ( JEL J61, J31)     

Stability of supply function equilibria implications for daily versus hourly bids in a poolco market

We consider a supply function model of a poolco electricity market where demand varies significantly over a time horizon such as a day and also has a small responsiveness to price. Although there are equilibria yielding prices at peak that are close to Cournot prices, it is known that the wider the range of demand uncertainty the narrower the range of such supply function equilibria. Here we show that such equilibria are also typically unstable and consequently would be difficult to sustain in practice. This strengthens the results of Green and Newbery by ruling out many equilibria that have high prices. We demonstrate this result both theoretically under somewhat restrictive assumptions and also numerically using both a three-firm example system and a five-firm example system having generation capacity constraints. Hence, this reinforces the conclusion that the market outcome is significantly influenced by a requirement that offers into the poolco be consistent over the time horizon. This result contrasts with markets where bids can be changed on an hourly basis, where Cournot prices are possible outcomes. The stability analysis has important policy implications for the design of day-ahead electricity markets. The stability perspective also provides a narrowing of the equilibrium selection that strengthens empirical analysis.      

The Effect of Bidder Heterogeneity on Combinatorial Conservation Auction Designs

In an iterative combinatorial auction, bidders can submit bids on individual and/or on combinations of projects in a series of intermediate rounds, where bid prices are revised before a final allocation is made. The iterative format is useful for conservation service procurement as landholders can rely on market information revealed through the rounds to evaluate their choices of projects and bid prices. However, there is no single way of providing the market information. Different designs for generating price information have been proposed. Little is known about the performance of iterative combinatorial auction designs when heterogeneous bidders, with different cost structures, participate in an auction. Using an agent based model, we evaluate a selected set of designs under different bidder heterogeneity scenarios. We observe that higher degrees of heterogeneity lead to lower auction efficiency and that auction outcomes are highly sensitive to price feedback design choices.     

EFFECTS OF INDEX‐FUND INVESTING ON COMMODITY FUTURES PRICES

We develop a simple model of futures arbitrage that implies that if purchases by commodity index funds influence futures prices, then the notional positions of the index investors should help predict excess returns in these contracts. We find no evidence that the positions of index traders in agricultural contracts as identified by the Commodity Futures Trading Commission can help predict returns on the near futures contracts. Although there is some support that these positions might help predict changes in oil futures prices over 2006–2009, the relation breaks down out of sample.     

Immigration,Ethnic Diversity,and Political Outcomes: Evidence from Denmark

I study the impact of immigration and increasing ethnic diversity on political outcomes in immigrant‐receiving countries, focusing on immigration and election outcomes in Danish municipalities between 1981 and 2001. A novel instrumental variable strategy based on historical housing stock data addresses issues of endogenous location choices of immigrants and a rich set of control variables is employed to isolate ethnic diversity effects from those of other immigrant characteristics. Increases in local ethnic diversity lead to rightward shifts in election outcomes by shifting electoral support away from traditional “big government” left‐wing parties and towards anti‐immigrant nationalist parties. This holds for both local and national elections.