The Berry, Levinsohn, and Pakes (1995, BLP) model is widely used to obtain parameter estimates of market forces in differentiated product markets. The results are often used as an input to evaluate economic activity in a structural model of demand and supply. Precise estimation of parameter...

The rationality of choices is one of the most fundamental assumptions of traditional economic analysis. Yet, substantial evidence has documented that choices often cannot be rationalized by utility maximization. Several measures of rationality have been introduced in the literature to quantify...

We characterize optimal consumption policies in a recursive intertemporal utility framework with local substitution. We establish existence and uniqueness and a version of the Kuhn-Tucker theorem characterizing the optimal consumption plan. An explicit solution is provided for the case when the...

We propose a tractable dynamic framework for the joint determination of optimal consumption, portfolio choice, and healthcare irreversible investment. Our model is based on a Merton's portfolio and consumption problem, where, in addition, the agent can choose the time at which undertaking a...

Consumers often face choice settings in which alternatives are discrete. Examples include choices between variants of differentiated products, modes of urban transportation, residential locations, etc. In this paper compensated price elasticities and a corresponding(aggregate) Slutsky equation...

Investment disparity in the education of persons with disabilities may be larger on the part of parents, in part resulting from predicted lower returns to the investment due to mistaken beliefs about their capabilities, or actual lower returns due to barriers in the labor market. Using a...

This paper examines the extent to which gains-from-trade predictions from commonly-used trade theories are consistent with observed household consumption decisions. Our approach is based on inference from household-level estimation of food Engel curves in the US and in a few other countries. For...

In old age, consumption can fluctuate because of shocks to available resources and because health shocks affect utility from consumption. We find that even temporary drops in income and health are associated with drops in consumption and most of the effect of temporary drops in health on...

The classic Working-Leser household Engel curve is unpacked to reveal individual budget allocations across commodities as a function of both individual and household total spending. Two main findings emerge on calibrating our model to an unusual sub-household dataset for Senegal. First, for all...

The Slutsky matrix function encodes all the information about local variations in demand with respect to small (Slutsky) compensated price changes. When the demand function is the result of utility maximization the Slutsky matrix is symmetric. However, symmetry does not imply rationality. Here,...

This paper provides a dual formulation of the optimal consumption problem with internal multiplicative habit formation. In this problem, the agent derives utility from the ratio of consumption to the internal habit component. Due to this multiplicative specification of the habit model, the...

The COVID-19 pandemic led to stark reductions in economic activity in India. We employ CMIE's Consumer Pyramids Household Survey to examine the timing, distribution, and mechanism of the impacts from this shock on income and consumption through December 2020. First, we estimate large and...

We study the identification and estimation of preferences in hedonic discrete choice models of demand for differentiated products. In the hedonic discrete choice model, products are represented as a finite dimensional bundle of characteristics, and consumers maximize utility subject to a budget...

Using a unique data set of medium and large enterprises (MLEs), which covers four Russian regions and the three sectors manufacturing and mining, construction and trade and distribution, we estimate fixed effects specifications of static labor demand equations for the year 1997. The most...

We provide new evidence from the 1980, 1990, and 2000 Decennial Census of Housing that the expenditure share on housing is constant over time and across U.S. metropolitan areas (MSA). Consistent with this observation, we consider a basic model in which identical households with Cobb-Douglas...

Economists routinely make functional form assumptions about consumer demand to obtain welfare estimates—often for convenience, tractability, or both. How sensitive are welfare estimates to these assumptions? In this paper, we answer this question by providing bounds on welfare that hold for...

This paper studies the infinite horizon optimal consumption with a path-dependent reference under the exponential utility. The performance is measured by the difference between the non-negative consumption rate and a fraction of the historical consumption maximum. The consumption running maximum...

I develop a technique useful for obtaining more precise estimates of demand and supply curves when constrained to market-level data. It augments the estimation routine with data on the average characteristics of consumers that purchase different products. I apply the technique to the automobile...

We propose a new optimal consumption model in which the degree of addictiveness of habit formation is directly controlled through a constraint on admissible consumption. In particular, we assume that the individual is unwilling to consume at a rate below a certain proportion 0α≤1 of her...

The classic Working-Leser household Engel curve is unpacked to reveal individual budget allocations across commodities as a function of both individual and household total spending. Two main findings emerge on calibrating our model to an unusual sub-household dataset for Senegal. First, for all...

We study an intertemporal consumption and portfolio choice problem under Knightian uncertainty in which agent's preferences exhibit local intertemporal substitution. We also allow for market frictions in the sense that the pricing functional is nonlinear. We prove existence and uniqueness of the...

Food insecurity and malnutrition are still major challenges for large proportions of households in Sub-Saharan Africa. The empirical literature on food demand, however, suggests mixed evidence on the roles of income and other socio-economic attributes on food demand. This study analyzes the food...

The net accumulation of human capital through the cultivation of cognitive and non-cognitive skills and knowledge, is an important source of change in professional and personal people's life. Past work experience has a direct effect on wage levels and their growth; thus, it influences the...

A model is provided whereby a monopolist firm chooses to price its product at zero. This outcome is shown to be driven by the assumption of `free disposal' alongside selection markets (where prices impact on a firm's costs). Free disposal creates a mass point of consumers whose utility from the...

We present the optimal consumption and investment strategy for an investor,endowed with labor income, searching to maximize utility from consumption and terminalwealth when facing a binding capital constraint of a European (constraint on terminal wealth)or an American (constraint on the wealth...

Economists routinely make functional form assumptions about consumer demand to obtain welfare estimates. How sensitive are welfare estimates to these assumptions? We answer this question by providing bounds on welfare that hold for families of demand curves commonly considered in different...

As billions of people in the developing world seek to increase their living standards, their aspirations pose a challenge to global efforts to cut greenhouse gas emissions. The emerging middle class are buying and operating energy intensive durables ranging from vehicles to air conditioners to...

Chapter 1: Economics and the Equity Market: A Microeconomics Course Application -- Chapter 2: Liquidity, Trading, and Price Determination in Equity Markets: A Finance Course Application -- Chapter 3: Liquidity and the Impact of Information Shocks: A Macroeconomics Course Application -- Chapter...