A02
Biased Beliefs in Dynamic Decisions in Competitive Markets
Discussion Papers

Discussion Paper No. 189
November 9, 2021

Optimal Social Assistance and Unemployment Insurance in a Life-Cycle Model of Family Labor Supply and Savings

Author:

Peter Haan (DIW Berlin)
Victoria Prowse (Purdue University)

Abstract:

We empirically analyze the optimal mix and optimal generosity of unemployment insurance and social assistance programs. To do so, we specify a structural life-cycle model of the labor supply, savings, and social assistance claiming decisions of singles and married couples. Partial insurance against wage and employment shocks is provided by social programs, savings, and the labor supplies of all adult household members. We show that the optimal policy mix is dominated by moderately generous social assistance, which guarantees a permanent universal minimum household income, with only a minor role for temporary earnings-related unemployment insurance. The optimal amount of social assistance is heavily influenced by income pooling in married households. This pooling provides partial insurance against negative economic shocks, reducing the optimal generosity of social assistance.

Keywords:

unemployment insurance; social assistance; design of benefit programs; life-cycle labor supply; intra-household insurance; household savings; employment risk; added worker effect;

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Discussion Paper No. 188

Insurance, Redistribution, and the Inequality of Lifetime Income

Author:

Peter Haan (DIW Berlin)
Daniel Kemptner (DIW Berlin)
Victoria Prowse (Purdue University)

Abstract:

Individuals vary considerably in how much they earn during their lifetimes. We study how the tax-and-transfer system o sets inequalities in lifetime earnings, which would otherwise translate into di erences in living standards. Based on a life-cycle model, we fi nd that redistribution by taxes and transfers off sets 54% of the inequality in lifetime earnings that is due to heterogeneous skill endowments. Meanwhile, taxes and transfers insure 45% of lifetime earnings risk. Taxes would provide more insurance if based on lifetime instead of annual earnings. Requiring wealthy individuals to repay social assistance received when younger would strengthen the insurance and redistributive functions of social assistance.

Keywords:

lifetime earnings; lifetime income; tax-and-transfer system; taxation; unemeployment insurance; disability benefits; redistribution; insurance; endowment; risk; dynamic life-cycle models;

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Discussion Paper No. 174
November 8, 2021

Immigration and the Evolution of Local Cultural Norms

Author:

Felix Weinhardt (DIW Berlin)
Sophia Schmitz (Federal Ministry of Finance)

Abstract:

We study the local evolution of cultural norms in West Germany in reaction to the sudden presence of East Germans who migrated to the West after reunification. These migrants grew up with very high rates of maternal employment, whereas West German families followed the traditional breadwinner-housewife model. We find that West German women increase their labor supply and that this holds within household. We provide additional evidence on stated gender norms, West-East friendships, intermarriage, and childcare infrastructure. The dynamic evolution of the local effects on labor supply is best explained by local cultural learning and endogenous childcare infrastructure.

Keywords:

cultural norms; local learning; gender; immigration;

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Discussion Paper No. 171

The Standard Portfolio Choice Problem in Germany

Author:

Christoph Breunig (HU Berlin)
Steffen Huck (WZB Berlin, UCL)
Tobias Schmidt (QuantCo)
Georg Weizsäcker (HU Berlin, DIW Berlin)

Abstract:

We study an investment experiment with a representative sample of German households. Respondents invest in a safe asset and a risky asset whose return is tied to the German stock market. Experimental investments correlate with beliefs about stock market returns and exhibit desirable external validity at least in one respect: they predict real-life stock market participation. But many households are unresponsive to an exogenous increase in the risky asset's return. The data analysis and a series of additional laboratory experiments suggest that task complexity decreases the responsiveness to incentives. Modifying the safe asset's return has a larger effect on behaviour than modifying the risky asset's return.

Keywords:

stock market expectations; stock market participation; portfolio choice; financial literacy; complexity;

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Discussion Paper No. 170

Belief Updating: Does the 'Good-News, Bad-News' Asymmetry Extend to Purely Financial Domains?

Author:

Abstract:

Bayes' statistical rule remains the status quo for modeling belief updating in both normative and descriptive models of behavior under uncertainty. Some recent research has questioned the use of Bayes' rule in descriptive models of behavior, presenting evidence that people overweight 'good news' relative to 'bad news' when updating ego-relevant beliefs. In this paper, we present experimental evidence testing whether this 'good-news, bad-news' effect is present in a financial decision making context (i.e. a domain that is important for understanding much economic decision making). We find no evidence of asymmetric updating in this domain. In contrast, in our experiment, belief updating is close to the Bayesian benchmark on average. However, we show that this average behavior masks substantial heterogeneity in individual updating. We find no evidence in support of a sizeable subgroup of asymmetric updators.

Keywords:

economic experiments; bayes' rule; belief updating; belief measurement; proper scoring rules; motivated beliefs;

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Discussion Paper No. 169

Confidence and Career Choices: An Experiment

Author:

Kai Barron (WZB Berlin)
Christina Gravert (University of Copenhagen)

Abstract:

Confidence is often seen as the key to success. Empirical evidence about how such beliefs about one's abilities causally map into actions is, however, sparse. In this paper, we experimentally investigate the causal effect of an increase in confidence about one's own ability on two central choices made by workers in the labor market: choosing between jobs with different incentive schemes, and the subsequent choice of how much effort to exert within the job. An exogenous increase in confidence leads to an increase in subjects' propensity to choose payment schemes that depend heavily on ability. This is detrimental for low ability workers. Policy implications are discussed.

Keywords:

overconfidence; experiment; beliefs; real-effort; career choices;

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Discussion Paper No. 123

Beliefs as a Means of Self-Control? Evidence from a Dynamic Student Survey

Author:

Georg Weizsäcker (HU Berlin)
Tobias König (HU Berlin)
Sebastian Schweighofer-Kodritsch (HU Berlin, WZB Berlin)

Abstract:

We repeatedly elicit beliefs about the returns to study effort in a panel survey of students of a large university course. A behavioral model of quasi-hyperbolic discounting and malleable beliefs yields the prediction that the dynamics of return beliefs mirrors the importance of exerting self-control, such that return expectations first increase as the exam approaches, and then sharply drop post-exam. Exploiting variation in exam timing to control for common information shocks, we find this prediction confirmed: average subjective expectations of returns increase by about 20% over the period before the exam, and drop by about the same amount afterwards.

Keywords:

belief elicitation; return to study effort; dynamic belief patterns;

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Discussion Paper No. 118
November 5, 2021

Class Rank and Long-Run Outcomes

Author:

Felix Weinhardt (DIW Berlin)
Jeffrey T. Denning (Brigham Young University)
Richard Murphy (University of Texas at Austin)

Abstract:

This paper considers a fundamental question about the school environment - what are the long run effects of a student's ordinal rank in elementary school? Using administrative data from all public school students in Texas, we show that students with a higher third grade academic rank, conditional on ability and classroom effects, have higher subsequent test scores, are more likely to take AP classes, graduate high school, enroll in college, and ultimately have higher earnings 19 years later. Given these findings, the paper concludes by exploring the tradeoff between higher quality schools and higher rank.

Keywords:

rank; education; subject choice;

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Discussion Paper No. 116

Who Teaches the Teachers? A RCT of Peer-to-Peer Observation and Feedback in 181 Schools

Author:

Felix Weinhardt (DIW Berlin)
Gillian Wyness (University College London)
Richard Murphy (University of Texas at Austin)

Abstract:

It is well established that teachers are the most important in-school factor in determining student outcomes. However, to date there is scant robust quantitative research demonstrating that teacher training programs can have lasting impacts on student test scores. To address this gap, we conduct and evaluate a teacher peer-to-peer observation and feedback program under Randomized Control Trial (RCT) conditions. Half of 181 volunteer primary schools in England were randomly selected to participate in the two year program. We find that students of treated teachers perform no better on national tests a year after the program ended. The absence of external observers and incentives in our program may explain the contrast of these results with the small body of work which shows a positive influence of teacher observation and feedback on pupil outcomes.

Keywords:

education; teachers; ret; peer mentoring;

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Discussion Paper No. 101

Labor Market and Distributional Effects of an Increase in the Retirement Age

Author:

Johannes Geyer (DIW Berlin)
Peter Haan (DIW Berlin)
Anna Hammerschmidt (DIW Berlin)
Michael Peters (DIW Berlin)

Abstract:

We evaluate the labor market and distributional effects of an increase in the early retirement age (ERA) from 60 to 63 for women. We use a regression discontinuity design which exploits the immediate increase in the ERA between women born in 1951 and 1952. The analysis is based on the German micro census which includes about 370,000 households per year. We focus on heterogeneous labor market effects on the individual and on the household level and we study the distributional implications using net household income. In this respect we extend the previous literature which mainly studied employment effects on the individual level. Our results show sizable labor market effects which strongly differ by subgroups. We document larger employment effects for women who cannot rely on other income on the household level, e.g. women with a low income partner. The distributional analysis shows on average no significant effects on female or household income. This result holds as well for heterogeneous groups: Even for the most vulnerable groups, such as single women, women without higher education, or low partner income, we do not find significant reductions in income. One reason for this result is program substitution.

Keywords:

retirement age; pension reform; labor supply; early retirement; distributional effects; spillover effects; household;

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