The relative income hypothesis

Despite its theoretical dominance, the empirical case in favor of the permanent income hypothesis is weak. Contrary to one of its basic implications, a growing body of evidence suggests that rich households save a higher proportion of their permanent income than poor households. We propose an overlapping-generations economy where households care about relative consumption. As a result, an individual's consumption is driven by the comparison of his lifetime income and the lifetime income of his reference group; a permanent income version of Duesenberry's (1949) relative income hypothesis. Across households the savings rate increases with income while aggregate savings are independent of the income distribution.     

The winners and losers of tax reform: An assessment under financial integration

I quantify the macroeconomic and redistributive effects of the unilateral elimination of the capital income tax in a two-country, heterogeneous-agent incomplete markets model with progressive labor income taxes. Home, by implementing the reform, induces government responses where labor income is taxed in Home and mostly subsidized in Foreign. In addition, post-reform price dynamics reduce Home’s wealth and suppress households’ ability to do consumption smoothing, with negative effects on the majority—particularly on the poor. In turn, Foreign accumulates wealth, and price movements work particularly in favor of the poor. As a result, a large majority in Home prefers the status quo whereas Foreign supports the reform unanimously. These findings are robust to alternative scenarios where (i) the borrowing constraints are relaxed, (ii) both countries jointly eliminate capital income taxes, (iii) foreign interest income is taxed, and (iv) Home capital income tax is reduced from 40% to 35%.     

REGIONAL SHORT-RUN EFFECTS OF TRADE LIBERALIZATION IN BRAZIL

We use a single-country multi-regional computable general equilibrium model to evaluate regional short-run impacts of reduction in import tariffs resulting from recent free trade area agreements, on poverty and distribution of income in Brazil. Results show that trade can reduce inter-regional income inequality, but poor urban households lose with trade liberalization. Trade policy alone is not sufficient for achieving more equitable income distribution goals in Brazil. Without greater investment in human and physical capital, incomes in most regions of Brazil are likely to lag behind incomes in the South/Southeast, the most developed regions in the country.     

What drives equity market non-participation?

This paper produces endogenous equity market non-participation in an economy with uninsurable labor income risk and heterogeneous skill levels. Prudence and impatience generate stationary household wealth levels that depend on income. Skill, and therefore labor income, heterogeneity leads to wealth heterogeneity, with high skill households accumulating high wealth and low skill households accumulating low wealth. A HARA class utility with subsistence consumption requirement generates decreasing RRA with respect to household wealth. Consequently, low skill households also have significantly higher local RRA. In addition low skill households have less human capital and therefore have lower diversification demand for stocks. Low wealth, high RRA and low diversification demand predicts that low skill households do not hold stocks in the face of a moderate ownership cost. In addition, the model predicts a humped lifecycle wealth accumulation pattern and a humped lifecycle stock allocation pattern. I also find that stockholders exhibit a greater aggregate willingness to supply risky capital during the expansion phase of a business cycle, despite the lower conditional equity premium.     

Corruption, economic growth, and income inequality in Africa

This paper uses panel data from African countries and a dynamic panel estimator to investigate the effects of corruption on economic growth and income distribution. I find that corruption decreases economic growth directly and indirectly through decreased investment in physical capital. A unit increase in corruption reduces the growth rates of GDP and per capita income by between 0.75 and 0.9 percentage points and between 0.39 and 0.41 percentage points per year respectively. The results also indicate that increased corruption is positively correlated with income inequality. The combined effects of decreased income growth and increased inequality suggests that corruption hurts the poor more than the rich in African countries. Received: March 19, 2001 / Accepted: December 14, 2001 RID="*" ID="*" An earlier version of this paper was presented at the first AmFiTan International Conference on Development Ethics in February 2000, Dar er Salaam, Tanzania. I thank two anonymous referees of this Journal for helpful suggestions. I am, however, solely responsible for any remaining errors.     

VOTING, INEQUALITY AND REDISTRIBUTION

Abstract.  This paper surveys models of voting on redistribution. Under reasonable assumptions, the baseline model produces an equilibrium with the extent of redistributive taxation chosen by the median income earner. If the median is poorer than average, redistribution is from rich to poor, and increasing inequality increases redistribution. However, under different assumptions about the economic environment, redistribution may not be simply rich to poor, and inequality need not increase redistribution. Several lines of argument are presented, in particular, political participation, public provision of private goods, public pensions, and tax avoidance or evasion.     

Spatial growth with exogenous saving rates

Economic growth has traditionally been analyzed in the temporal domain, while the spatial dimension is captured by cross-country income differences. Data suggest great inequality in income per capita across countries, and a slight but noticeable increase in inequality across nations between 1960 and 2000. Seeking to explore the mechanism underlying the temporal evolution of the cross sectional distribution of economies, we develop a spatial growth model where saving rates are exogenous. Capital movements across locations are governed by a mechanism under which capital moves toward locations of relatively higher marginal productivity, with a velocity determined by the existing stock of capital. This augments the capital accumulation equation by a nonlinear diffusion term. Our results suggest that under diminishing returns, the growth process leads to a stable spatially nonhomogeneous distribution for per capita capital and income in the long run. Insufficient savings may lead to the emergence of persistent poverty cores where capital stock is depleted in some locations.     

Mobility and the dynamics of poverty in Iran: Evidence from the 1992–1995 panel survey

In the last three decades, revolutionary Iran has experienced large shocks to its political and economic system with likely effects on poverty, inequality, and economic mobility. While poverty has declined, inequality has remained relatively high and stable over nearly four decades. In this paper, for the first time, we examine poverty and inequality in a dynamic context using a 4-year panel data, collected during 1992–1995. We show that short-term income mobility is relatively high, which helps mitigate persistent high inequality. We offer a range of estimates of transition probabilities, indicating that, for example, someone in the lowest (highest) quintile has between 25% and 50% chance of moving up (down) the income ladder. Focusing on the dynamics of poverty, we distinguish between short- and long-term poor and between chronic and transient poverty. Surprisingly, we find that chronic poverty is a more serious problem in urban than rural areas, while transient poverty is geographically more uniformly distributed. Finally, using Tobit and quantile regression, we examine the correlates of these two types of poverty. Both chronic and transient poverty are higher for households headed by women and by younger and less educated men. While minorities suffer more from transient poverty, they are less likely to be chronically poor. We discuss the implications of these findings for policy to alleviate chronic and transient poverty.     

Endogenous fertility, multiple growth paths, and economic convergence

"This paper extends the Cass-Koopmans optimal growth model to allow for endogenous fertility choice. It is shown that if agents choose their fertility rate, then the net rate of return on capital (marginal product of capital minus the population growth rate) may not be monotonically decreasing in capital. In this case, multiple steady states and growth paths may emerge, which can explain the persistent differentials in income between poor and rich countries, as well as the existence of development miracles and disasters. The paper provides also empirical evidence which supports the existence of multiple convergence groups and is consistent with the theoretical model."     

On the impatience implications of Paretian social welfare functions

In this paper, we investigate the impatience implications resulting from the assumption of existence of a Paretian social welfare function (SWF) aggregating infinite utility streams. We show, for very general program spaces, that the set of utility streams, at which the SWF exhibits impatience, has the power of the continuum. In the context of a more special program space, which has figured prominently in the literature, we establish that this set is dense, so that even if there is a point in the program space at which the SWF does not exhibit impatience, there are points close to it at which it does. If the Paretian SWF is continuous (in the sup metric), we show that impatience is generic: the collection of points, at which the SWF does not exhibit impatience, is a closed, nowhere dense set.     

REGIONAL ECONOMIC INTEGRATION AND ITS IMPACTS ON GROWTH, POVERTY, AND INCOME DISTRIBUTION: THE CASE OF INDONESIA

Indonesia continually tries to open its economy through free trade areas (FTAs) on bilateral, regional, and multilateral bases. This paper discusses the impacts of FTAs on the Indonesian economy, particularly for economic growth, poverty, and income distribution. By using a Global Computable General Equilibrium (GCGE) model, we conducted the simulation analysis by setting eighteen scenarios for the ongoing and potential FTAs of different frameworks. Indonesia is found to benefit from joining in FTAs, except for the FTA with India. It is also implied that FTAs increase rural household income at higher rates than they increase urban household income. Moreover, FTAs' impacts are more favorable for unskilled workers than for skilled ones, and also for relatively poor households more than for rich households, both in urban and rural areas. In brief, FTAs provide Indonesia with income redistribution effects.     

DID INEQUALITY CAUSE THE U.S. FINANCIAL CRISIS?

In his widely discussed book ‘Fault Lines’ (2010), Raghuram Rajan argues that many low and middle income consumers have reduced their saving and increased debt since income inequality started to soar in the United States in the early 1980s. This has temporarily kept private consumption and employment high, but it also contributed to the creation of a credit bubble. This surge in household indebtedness turned out to be unsustainable in the financial crisis starting in 2007. Although Rajan and others emphasize the role of government in promoting credit to those households with declining relative (permanent) incomes, other strands of the literature have focused more explicitly on the implications of rising inequality for aggregate demand and households’ demand for credit. These differences in emphasis may explain why the literature on the inequality‐crisis nexus appears somewhat disparate, even though the various strands are far from mutually exclusive but rather complement each other. We therefore place the ‘Rajan hypothesis’ in the context of competing theories of consumption, and survey the empirical literature on the effects of inequality on household behaviour. We conclude that the empirical evidence calls for a renaissance of the relative income hypothesis of consumption.     

Ramsey equilibrium with liberal borrowing

This paper considers a multi-agent one-sector Ramsey equilibrium growth model with borrowing constraints. The extreme borrowing constraint used in the classical version of the model, surveyed in Becker (2006), and the limited form of borrowing constraint examined in Borissov and Dubey (2015) are relaxed to allow more liberal borrowing by the households. A perfect foresight equilibrium is shown to exist in this economy. We describe the steady state equilibria for the liberal borrowing regime and show that as the borrowing regime is progressively liberalized, the steady state wealth inequality increases. Unlike the case of a limited borrowing regime, an equilibrium path need not converge in the case of liberal borrowing regime. We show through an example that a two period cyclic equilibrium exists when agents are allowed to borrow against their two period future wage income. This result is similar to the possibility of non-convergent equilibrium capital stock sequences in the model with no borrowing.     

Equity, Price Elasticity, and Household Income Under Increasing Block Rates for Water

Abstract . For an examination of the relationships between household income levels and residential water use, individual household survey data from Tucson, Arizona the combined with monthly water use data for these same households. The objectives were to examine individual response to the existing block rate pricing structure and to provide policy conclusions on potential improvements in this rate structure. A simultaneous equation model of demand is estimated for households within each income group to determine the price elasticity of demand for each income group. The demand models show that under the existing increasing block rate pricing schedules, higher income households not only use more water, but have lower elasticities of demand. Thus a uniform proportional rate increase will cause a larger percentage drop in water use among low income households than among high income households. Given the assumption of declining marginal utility of water use, this result leads to a policy recommendation for substantially steeper block rates to improve interpersonal equity in water pricing.     

Competitive pressures on China: Income inequality and migration

How would perfect competition affect the distribution of income in China? To answer this question, we integrate the two main streams of income distribution theory, namely the functional and the personal income approaches. First, using a general equilibrium model of China comprising 30 sectors and 27 provinces, marginal productivities are used as competitive commodity prices and factor rewards. Second, the rewards are imputed to households using their compositions in terms of persons and factor endowment entitlements. The ensuing distribution is contrasted with the status quo. Less skilled labor would stand to lose and, therefore, inequality would mount. Skilled workers, managers and technicians would move from Western and Central China to Eastern China. These flows would be more than offset by a flow of unskilled labor from Eastern China to Central China. Our finding that Eastern China has too many unskilled workers, relative to the competitive benchmark, suggests that the Harris–Todaro mechanism operates in China. Competition would change the predominant nature of inequality from the rural–urban divide to differences between the social classes. Moreover, the existing negative relationship between development and inequality would evaporate.     

The long run effects of changes in tax progressivity

This paper compares the steady-state outcomes of revenue-neutral changes to the progressivity of the tax schedule. Our economy features heterogeneous households who differ in their preferences and permanent labor productivities, but it does not have idiosyncratic risk. We find that increases in the progressivity of the tax schedule are associated with long-run distributions with greater aggregate income, wealth, and labor input. Average hours generally declines as the tax schedule becomes more progressive implying that the economy substitutes away from less-productive workers toward more-productive workers. Finally, as progressivity increases, income inequality is reduced and wealth inequality rises. Many of these results are qualitatively different than those found in models with idiosyncratic risk, and therefore suggest closer attention should be paid to modeling the insurance opportunities of households.     

Pursuing justice against the abuse of power by the rich through social media: A case study

ABSTRACT

The purpose of this case study is to compare and contrast two recent legal cases and to derive practical implications to promote social justice in terms of income inequality. This study focuses on exploring and analyzing two of the most recent legal cases of the abuse of power by the rich in order to identify the effects of social media on these types of cases. Despite the availability of many studies and findings about the tolerance level to income inequality, the following logic is more appropriate in applying and analyzing the two cases: If people don’t know, see, or experience the abuse of the rich or income inequality, they are more tolerant of the abuse and income inequality. Based on the analysis of the two cases, the article concludes that these two cases are not the usual air rage cases; they are more about the abuse of the rich and the punishment decided by the use of technology.     

The Low‐Quality Advantage in Vertical Product Differentiation

By assuming a triangular distribution of consumers' willingness to pay for quality, this paper makes use of the stylized fact that low‐income households are more numerous than high‐income households, and thus, income distributions are right‐skewed. Accordingly, we present a straightforward two‐firm, two‐stage vertical product differentiation model with quality‐dependent marginal production costs, where the firm offering the low‐quality product has the larger market share and profit than the top‐quality competitor. This can be termed low‐quality advantage and may explain the success of large retailers serving the masses by offering low‐quality products. Copyright © 2016 John Wiley & Sons, Ltd.     

The allocation of household income to food consumption

Low-income households - those toward which various income supplement programs are aimed - not only spend a large share of their incomes on food, but exhibit a higher income elasticity of demand for food than does the rest of the population. Further, a greater proportion of the marginal income generated via welfare payments and food subsidy programs (e.g., food stamps) is devoted to food consumption than is true of wage income. These are among the major conclusions emerging from an extensive Engel Curve analysis applied to the data generated by a five-year (1968–1972) panel study of 5000 U.S. households.