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We discuss the most popular static and dynamic models of household behavior. Our main objective is to explain which aspects of household decisions different models can account for. Using this insight, we describe testable implications, identification results, and estimation findings obtained in the literature. Particular attention is given to the ability of different models to answer various types of policy questions.

This paper examines how divorce laws affect couples' intertemporal choices and well-being. Exploiting panel variation in US laws, I estimate the parameters of a model of household decision-making. Household survey data indicate that the introduction of unilateral divorce in states that imposed an equal division of property is associated with higher household savings and lower female employment, implying a distortion in household assets accumulation and a transfer toward wives whose share in household resources is smaller than the one of their husband. When spouses share consumption equally, separate property or prenuptial agreements can reduce distortions and increase equity.

Resource scarcity, manifested through limited time, money or space, is a prevalent aspect of family life. Drawing on depth interviews with 30 families from diverse demographic backgrounds, this study develops a framework to demonstrate how families respond to resource scarcity. Our research examines how multi-dimensional, concurrent and/or consecutive life events, such as job changes, house moves, or childbirth, create a mismatch between available and required resources to trigger situational resource scarcity. We identify different patterns of adjustments in consumption and resource investment over time, based on families’ chronic resources and reliance on support networks. Notably, the greater flexibility afforded by multiple family members is constrained by collective goals, domains of control, tensions and negotiations.

Many key development outcomes depend on women s ability to negotiate favorable intrahousehold allocations of resources. Yet it has been difficult to clearly identify which policies can increase women's bargaining power and result in better outcomes. This paper reviews both the analytical frameworks and the empirical evidence on the importance of women's bargaining power. It argues that there is sufficient evidence from rigorous studies to conclude that women's bargaining power does affect outcomes. But in many specific instances, the quantitative evidence cannot rigorously identify causality. In these cases, a combination of quantitative and qualitative evidence may suggest policy levers. Taken together, there are sufficient data in place to support a greatly expanded focus on intrahousehold outcomes and bargaining power. Additional data at the individual level will allow for further and more detailed research. A growing literature supports the current conventional wisdom – namely, that the patterns of evidence suggest that women s education, incomes, and assets all are important aspects of women s bargaining power.

We posit that household decision-making over fertility is characterized by moral hazard since most contraception can only be perfectly observed by the woman. Using an experiment in Zambia that varied whether women were given access to contraceptives alone or with their husbands, we find that women given access with their husbands were 19 percent less likely to seek family planning services, 25 percent less likely to use concealable contraception, and 27 percent more likely to give birth. However, women given access to contraception alone report a lower subjective well-being, suggesting a psychosocial cost of making contraceptives more concealable.

Exponential growth bias is the pervasive tendency to linearize exponential functions when assessing them intuitively. We show that exponential growth bias can explain two stylized facts in household finance: the tendency to underestimate an interest rate given other loan terms, and the tendency to underestimate a future value given other investment terms. Bias matters empirically: More-biased households borrow more, save less, favor shorter maturities, and use and benefit more from financial advice, conditional on a rich set of household characteristics. There is little evidence that our measure of exponential growth bias merely proxies for broader financial sophistication.

I study the implications of two major debt-relief policies in the United States: the Bankruptcy Abuse Prevention and Consumer Protection Act (BAPCPA) and the Home Affordable Refinance Program (HARP). To do so, I develop a model of housing and default that includes relevant dimensions of credit-market policy and captures rich heterogeneity in household balance sheets. The model also explains the observed cross-state variation in consumer default rates. I find that BAPCPA significantly reduced bankruptcy rates, but increased foreclosure rates when house prices fell. HARP reduced foreclosures by 1 percentage point and provided substantial welfare gains to households with high loan-to-value mortgages.

We document contemporaneous differences in the aggregate labour supply of married couples across seventeen European countries and the U.S. Based on a model of joint household decision making, we quantify the contribution of international differences in non-linear labour income taxes and consumption taxes to the international differences in hours worked in the data. Through the lens of the model, taxes, together with wages and the educational composition, account for a significant part of the small differences in married men’s and the large differences in married women’s hours worked in the data. Taking the full non-linearities of labour income tax codes, including the tax treatment of married couples, into account is crucial for generating the low cross-country correlation between married men’s and women’s hours worked in the data, and for explaining the variation of married women’s hours worked across European countries.

The growth in labour market participation among women with young children has raised concerns about its implications for child cognitive development. We estimate a model of the cognitive development process of children nested within an otherwise standard model of household behaviour. The household makes labour supply decisions and provides time and money inputs into the child quality production process during the development period. Our empirical results indicate that both parents' time inputs are important for the cognitive development of their children, particularly when the child is young. Money expenditures are less productive in terms of producing child quality. Comparative statics exercises demonstrate that cash transfers to households with children have small impacts on child quality due to the relatively low impact of money investments on child outcomes and the fact that a significant fraction of the transfer is spent on other household consumption and the leisure of the parents.

What are the macroeconomic effects of transfers to households with children? How do alternative policies fare in welfare terms? We answer these questions in an equilibrium life-cycle model with household labour supply decisions, skill losses of females associated to non-participation, and heterogeneity in terms of fertility, childcare expenditures, and access to informal care. Calibrating our model to the U.S. economy, we first provide a roadmap for policy evaluation by contrasting transfers that are conditional on market work (childcare subsidies and childcare credits) with those that are not (child credits), when both types can be means tested or universal. We then evaluate expansions of current arrangements for the U.S. and find that expansions of conditional transfers have substantial positive effects on female labour supply, that are largest at the bottom of the skill distribution. Expanding childcare credits leads to long-run increases in the participation of married females of 10.6%, while an equivalent expansion of child credits leads to the opposite (−2.4%). Expanding existing programs generates substantial welfare gains for newborn households, which are largest for less-skilled households. Expanding childcare credits leads to the largest welfare gains for newborns and achieves majority support.