Rational demand and expenditures patterns under habit formation

This paper proposes a model in which habit formation is present in a relatively general but tractable way. The consumer's problem is transformed into a sequence of two-period Fisherian problems by introducing a “reduced utility function” to ensure full dynamic rationality of the consumer. By making preferences dependent on past real expenditure levels rather than past consumption bundles, it is possible to characterize the long-run behavior of the consumer. Stability analysis is performed. The cases of “immediate habit formation” and “delayed habit formation” are discussed.     

Learning-by-doing or habit formation?

In a recent paper, Chang et al. [2002. Learning-by-doing as a propagation mechanism. American Economic Review 92 (5) 1498–1520] extend the standard real business cycle (RBC) model to allow for a learning-by-doing (LBD) mechanism whereby current labor supply affects future productivity. They show that this feature magnifies the propagation of shocks and improves the matching performance of the standard RBC model. In this paper, we show that the LBD model is nearly observationally equivalent to an RBC model with habit formation in labor (or, equivalently, in leisure). Under the same calibration of the parameters, the two models share the same equilibrium paths of output, consumption, and investment, but have different implications for hours worked. Using Bayesian techniques, we investigate which of the LBD and Habit models fits the US data better. Our results suggest that the Habit specification is more strongly supported by the data.     

True indexes and rational habit formation

In this paper we discuss the construction of true indexes when tastes change endogenously. True indexes take the substitution possibilities of the consumer to a changing economic situation into account when equating the utility level of a particular period to the utility level attained in the base period through an appropriate change in income or the wage level. When tastes change endogenously, the current decision depends on the past history of consumption but, by the same token, the future path of consumption will depend on the current choice. In a true index, these intertemporal links of the current decision have to be taken into account. For a particular specification of the habit formation process, this is achieved by an appropriate transformation of prices and expenditures. A true intertemporal wage index is computed for the period 1946–1967 in the U.S. Because of increasing needs and intertemporal rationality, this index is roughly constant and equal to 1: real wages remained constant!     

Multiplicative habit formation and consumption: A note

A multiplicative form of the habit term in the utility function has some undesirable properties if the habit function is itself still additive (Wendner, 2003). A geometric form for the way the stock of habit accumulates can resolve these shortcomings.     

Two implications of habit formation for international trade

A country's choice set of trade policies becomes very constrained when its consumers are subject to habit formation. Free trade may, in fact, lie outside the choice set. Furthermore, the rise in import elasticities' values over time can be attributed to habit formation.     

Liquidity effects and habit formation in a sticky price model

This paper sets up a sticky price model with external habit formations. It shows that the cross-correlation between output and interest rates as well as prices match the data well when there is habit formation. Consumption as well as output display a hump-shaped response to a positive monetary shock when there is habit formation. The paper also shows that the sticky price model with Abel's (1990, 1999) external habit formation succeeds in generating liquidity effects.     

Growth, habit formation, and catching-up with the Joneses

When habits are introduced multiplicatively in a capital accumulation model, the consumers’ objective function might fail to be concave. In this paper, we provide conditions aimed at guaranteeing the existence of interior solutions to the consumers’ problem. We also characterize the equilibrium path of two growth models with multiplicative habits: the internal habit formation model, where individual habits coincide with own past consumption, and the external habit formation (or catching-up with the Joneses) model, where habits arise from the average past consumption in the economy. We show that the introduction of external habits makes the equilibrium path inefficient. We characterize in this context the optimal tax policy.     

Saving and habit formation: evidence from Dutch panel data

This paper focuses on the role of habit formation in individual preferences. In this study, the model of Alessie and Lusardi (Econ Lett 55:103–108, 1997) and its extension by Guariglia and Rossi (Oxf Econ Pap 54:1–19, 2002) are considered. Our empirical specifications are based on their closed-form solutions, where current saving is expressed as a function of lagged saving and other regressors. In our study, we use a longitudinal data set from the Netherlands that allows us to disentangle the role of habit formation from unobserved heterogeneity. Contrary to most other studies using survey data, we find evidence in favor of habit formation. However, the magnitude of the habit formation coefficient is rather small. Income uncertainty seems to affect saving behavior of Dutch households.     

Money, capital, and real liquidity effects with habit formation

Abstract.  The money in utility model is reconsidered in the presence of endogenous labour and habits. With standard assumptions about preferences and a policy rule that sets the nominal interest rate by adjusting the growth rate of money, the model exhibits superneutrality in the steady state. Nevertheless, habits give rise to real liquidity effects in the short run. After an increase in the nominal interest rate, employment falls, resulting in a fall in capital accumulation and in the short‐ and long‐term real interest rates. The adjustment of the capital stock is non‐monotonic. Employment and the short‐ and long‐term real interest rates may also adjust non‐monotonically. JEL classification: E22, E52, E58     

Capital utilization and habit formation in a small open economy model

Abstract.  This paper shows the effects of endogenous capital utilization and habit formation in consumption on the predictions of a small open economy model calibrated to Canada. Capital utilization improves the fit of the model by increasing the volatility of output, investment, and hours worked, while habit formation improves the fit of the model by improving the dynamic properties of consumption and the current account. It is also shown that while shocks to the world interest rate sometimes improve the fit of the baseline model, they do not improve the fit of the model with capital utilization and habit formation. JEL classification: E32, F32     

Optimal fiscal policy in a model with inherited aspirations and habit formation

In this paper, we analyze optimal fiscal policies in an overlapping generations framework, where preferences exhibit aspirations in consumption and environmental quality as well as habit formation. We focus on the second best policies when the government needs to finance a given stream of public expenditures by using distortionary taxes. We derive necessary and sufficient conditions under which the competitive equilibrium is characterized by levels of capital and environmental quality that are too small and a level of labor supply that is too large. Our numerical simulations show that an optimal fiscal policy can be used as an effective stabilization device and that when consumption taxes are fixed, the planner implements maintenance investment and capital income subsidies while financing public spending through labor and fixed consumption taxes.     

Optimal consumption taxation in a model of endogenous growth with external habit formation

This paper devises a consumption tax policy that allows to decentralize the efficient equilibrium in an AK endogenous growth model with external habit formation. The equilibrium dynamics, including that of the optimal taxes, is characterized by means of phase-diagram analysis.     

Consumption,habit formation,and savings: Evidence from a rural household panel survey

Protecting consumption from the effects of uninsured risk is vital for rural farming households, who tend to be poor and live close to subsistence level. Income uncertainty and habit formation play important roles in the consumption and savings. Variability in weather conditions has a strong linkage with variability in agricultural income in developing countries. This study analyzes consumption and saving decisions of rural farm households in India. Using household panel data for 4 years, we estimated consumption equation accounting for habit formation under income uncertainty. Our findings suggest an evidence for habit formation among rural households. Additionally, we found that both annual and seasonal weather risks significantly influence savings among rural households. Findings from this study also suggest a robust and vibrant farm economy and that the nonfarm economy could contribute to the economic well‐being of rural farming households.     

Choice, habit and evolution

Several leading mainstream economists including Gary Becker have treated habit as serially correlated behaviour resulting from deliberate choices. This approach puts choice before habit but involves assumptions of extensive memory and decision-making capacity. By contrast, earlier authors such as William James, John Dewey and Thorstein Veblen saw deliberation and choice as a contingent outcome of habits, where the latter are defined in terms of acquired dispositions rather than overt behaviour. The approach of this second group is more consistent with an evolutionary perspective and the limited computational capacities of the human brain.     

Portfolio choice with internal habit formation: a life-cycle model with uninsurable labor income risk

Motivated by the success of internal habit formation preferences in explaining asset pricing puzzles, we introduce these preferences in a life-cycle model of consumption and portfolio choice with liquidity constraints, undiversifiable labor income risk and stock-market participation costs. In contrast to the initial motivation, we find that the model is not able to simultaneously match two very important stylized facts: a low stock market participation rate, and moderate equity holdings for those households that do invest in stocks. Habit formation increases wealth accumulation because the intertemporal consumption smoothing motive is stronger. As a result, households start participating in the stock market very early in life, and invest their portfolios almost fully in stocks. Therefore, we conclude that, with respect to its ability to match the empirical evidence on asset allocation behavior, the internal habit formation model is dominated by its time-separable utility counterpart.     

Intertemporal substitution in import demand and the role of habit formation: an application of Euler equation approach for Pakistan

Introduction

The study examines the importance of intertemporal substitution in import demand considering the role of habit formation. A two-goods version of the permanent income model is used in which time-non-separability in consumers’s preferences is assumed. The model is estimated using annual data for Pakistan at disaggregated level covering the period from 1977 to 2017.

Objectives

The objective of the study is to estimate elasticities of substitution along with parameters of habit formation for consumption goods at a disaggregated level.

Method

The study employs co-integration for the estimation of parameters of elasticities of substitution and generalized method of moments (GMM) for the estimation of the parameters of habit formation from Euler equations.

Findings

The estimates of intertempral elasticity of substitution suggest that the nature of commodity group (necessity/luxury) plays an important role when consumers are making intertemporal choices. Moreover, the study finds that intratemporal elasticity of substitution is larger than intertempral elasticity of substitution in almost all cases in Pakistan, suggesting that imported and domestic goods are best described as substitutes in Edgeworth-Pareto sense. In addition, the inclusion of habit formation delivers results with plausible signs and the habit formation process seems significant for certain commodity groups including tea, beverages, tobacco products and drugs.

Conclusion

The study concludes that there is a possibility of crowding out effect on domestic consumption and the depreciation of local currency may improve Pakistan’s balance of trade.

     

Generalized habit formation in an Inverse Almost Ideal Demand System: An application to meat expenditures in the U.S.

The Inverse Almost Ideal Demand System (IAIDS) model of Moschini and Vissa (1992) and Eales and Unnevehr (1994) is extended to include: (1) general, nonlinear, nonadditive habit effects; and (2) a specification for habit stock terms that allows purchases from the distant past to influence current consumption (long memory). The resulting models are compared with a linear habit effects model and a static specification. The empirical estimation is on U.S. quarterly meat expenditures (1961–1993), with each model being subjected to a battery of misspecification tests. Results of these tests, along with tests of homogeneity and symmetry restrictions, indicate clearly that the most generalized dynamic specification-the one with nonlinear, nonadditive long-memory habit stock effects-is preferred. Furthermore, persistence effects are found to be qualitatively important in that flexibility, consumption scale, and habit flexibility estimates differ, in some instances substantially, between alternative specifications.     

Rational exuberance

We study a two-player investment game with information externalities. Necessary and sufficient conditions for a unique symmetric switching equilibrium are provided. When public news indicates that the investment opportunity is very profitable, too many types are investing early and investments should therefore be taxed. Conversely, any positive investment tax is suboptimally high if the public information is sufficiently unfavorable.     

Adaptive habit persistence in a system of demand equations

The LES has desirable properties as a tool to analyze consumer expenditure patterns. It is a system to equations permitting the researcher to deal with expenditure categories. The model is based upon the habit persistence of consumers. This model has its analytical foundation in the theory of consumer behavior, and it provides an excellent fit to the consumption data.Two modifications of the LES were combined and incorporated into the model. Previous studies treated these modifications separately. The modifications allow for systematic changes over time in the status quo expenditures and the allocation proportions.Estimations of the model utilized a generalized least squares iteration procedure. The results were consistent with theoretical considerations and provided estimates of consumer sensitivity to income and price changes in all expenditure categories considered.Clothing and shoes have the highest habit persistence proportion followed by housing and durables of surplus funds were identified. These changes in consumer behavior indicate a growing share of funds being allocated to durables. Food and beverage, clothing and shoes, and transportation have experienced declines in their allocation proportions. No significant change in housing is observed.     

An empirical analysis of habit and addiction to antibiotics

Because of bacterial resistance, current antibiotic consumption is reinforced by past use, and future utility is lower. The purpose of this article is to provide evidence on habit and addictive behavior toward antibiotics by exploring variations in the average consumption of antibiotics across 20 Italian regions. Using a balanced panel data set (2000–2009), we estimate myopic and rational addiction models, in which antibiotic consumption depends upon demographic and socioeconomic characteristics of the population, the supply of health care in the community, antibiotic price, and the “capital stock” of endogenous bacterial resistance measured by past and future consumption. Our empirical evidence shows that past antibiotic consumption stimulates current consumption and is also consistent with the rational addiction hypothesis. The low price elasticity of antibiotic demand suggests that policy measures targeted at antibiotic co-payments may not be effective in controlling antibiotic consumption. There is scope for other policy interventions, such as incentives and information campaigns targeted at doctors.