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Robert J. Shiller Publications

Publish Date
Southern Economic Journal
Abstract

Behavioral economics has played a fundamental role historically in innovation in economic institutions, even long before behavioral economics was recognized as a discipline. Examples from history, notably that of the invention of workers’ compensation, illustrate this point. Though scholarly discussion develops over decades, actual innovation tends to occur episodically, particularly at times of economic crisis. Fortunately, some of the major professional societies, the Verein für Sozialpolitik, the American Economic Association and their successors, have managed to keep a broad discourse going, involving a variety of research methods including some that may be described today as behavioral economics, thereby maintaining an environment friendly to institutional innovation. Further, the broad expansion of behavioral economics that is going on today can be expected to yield even more such important institutional innovations.

Keywords: Economic innovation, Invention, Psychological economics, Institutional economics, Social insurance, Workers’ compensation, American Economic Association, Germany, Verein für Sozialpolitik

JEL Classification: B41

Abstract

It is widely claimed that housing wealth, as well as stock prices, have an impact on consumption and hence on aggregate economic activity. This paper presents a broad overview of the issues that arise in evaluating this claim in the context of recent research in behavioral economics. Particular attention is paid to a model of the response of consumption to wealth components produced by Christopher Carroll [2004].

Keywords: Wealth effect, home prices, stock prices, consumption, saving, life cycle theory, interest rates, inflation, bubble

JEL Classification: E21

Abstract

Radical financial innovation is the development of new institutions and methods that permit risk management to be extended far beyond its former realm, covering important new classes of risks. This paper compares past such innovation with potential future innovation, looking at the process that produced past success and the possibilities for future financial innovation.

Keywords: Risk management, Institutions, Incomplete markets, Livelihood insurance, Behavioral finance, Livelihood risks, Home equity insurance, Country risks

JEL Classification: G10

Abstract

The world’s first known inflation-indexed bonds were issued by the Commonwealth of Massachusetts in 1780 during the Revolutionary War. These bonds were invented to deal with severe wartime inflation and with angry discontent among soldiers in the U.S. Army with the decline in purchasing power of their pay. Although the bonds were successful, the concept of indexed bonds was abandoned after the immediate extreme inflationary environment passed, and largely forgotten until the twentieth century. In 1780, the bonds were viewed as at best only an irregular expedient, since there was no formulated economic theory to justify indexation.

Keywords: Indexation, Inflation History, Inflation-Indexed Securities, Inflation-Protected Securities, Index-linked gilts, Tabular Standard, United States, Massachusetts

JEL Classification: E31

Abstract

The efficient markets theory reached the height of its dominance in academic circles around the 1970s. Faith in this theory was eroded by a succession of discoveries of anomalies, many in the 1980s, and of evidence of excess volatility of returns. Finance literature in this decade and after suggests a more nuanced view of the value of the efficient markets theory, and, starting in the 1990s, a blossoming of research on behavioral finance. Some important developments in the 1990s and recently include feedback theories, models of the interaction of smart money with ordinary investors, and evidence on obstacles to smart money.

Abstract

Research in psychology and behavioral finance is surveyed for evidence to what extent experts such as professional investment managers or endowment trustees may behave in such a way as to help perpetuate speculative bubbles in financial markets. This paper discusses scholarly psychological literature on the representativeness heuristic, overconfidence, attentional anomalies, self-esteem, conformity pressures, salience and justification for insights into weaknesses in expert opinion. The role of the prudent person standard and the news media in influencing experts is considered. The relevance of the literature on testing of the efficient markets theory is discussed.

Keywords: Institutional investors, investment professionals, organizations, committees, stock market, speculative markets, behavioral finance, feedback, groupthink, representativeness, heuristic, conservatism, subjective probability, prudent person, standard, ERISA, news media, attention, efficient markets, conformity pressures, true uncertainty

JEL Classification: G10

Abstract

Social security system old age insurance systems are devices for the sharing of income risks of elderly people with others. Risks can be shared intergenerationally (with the young of the same country), intragenerationally (with other elderly of the same country) or internationally (with foreigners).

Barriers to individuals themselves sharing their risks intergenerationally, intragenerationally or internationally are described. Optimal design of government-sponsored social security systems is considered in light of these barriers.

Alternative benefits and contributions formulas for pay-as-you-go social security systems are defined and compared with existing and proposed formulas in terms of their ability to fulfill the government’s role in promoting risk sharing. Benefits for each retired person may be tied to that person’s lifetime income without causing (as with the US benefits formula today) aggregate benefits for all elderly today to be tied to their past aggregate income.

Keywords: Old age insurance, pensions, risk management, hedging, theory, elderly, investments, pay-as-you-go, Social Security Trust Fund, overlapping generations model.

Abstract

An indexed unit of account is a unit of measurement defined using an index such as a consumer price index so that prices, wages or deferred payments defined in terms of these units will automatically adjust to changing economic conditions. Evidence on money illusion and sticky prices, and evidence from countries (notably Chile) that have created indexed units of account, suggests that creating such indexed units is an important policy option for governments in countries with unstable prices or incomes.

Choices for governments designing indexed units of account are discussed. Governments may choose to encourage the use of the units only for large long-deferred non-wage payments, or they may choose to go to the opposite extreme of encouraging the use of the units for defining all prices, wages and payments. A general equilibrium model is given that shows the dynamics of prices when all prices are expressed in the units. Governments may choose to link units to a consumer price index or to a per capita income index, and there may be advantages to creating both kinds of units simultaneously. Downward rigidity of real wages might be reduced if wages are denominated in base-income-indexed units of account, where base income is defined so that the growth rate in money value of the unit is biased down relative to actual per capita income growth. Examples of the units for United States are displayed and discussed. Could add description of simulation, if that is added.

Keywords: Indexation, escalator clause, cost of living allowance (COLA), monetized indexed units of account, base income, money illusion, sticky prices, fairness, unidad de fomento, Chile

Real Estate Economics
Abstract

Home equity conversion as presently constituted or proposed usually does not deal well with the potential problem of moral hazard. Once homeowners know that the risk of poor market performance of their homes is borne by investors, they have an incentive to neglect to take steps to maintain the homes’ values. They may thus create serious future losses for the investors. A calibrated model for assessing this moral hazard risk is presented that is suitable for a number of home equity conversion forms: 1) reverse mortgages, 2) home equity insurance, 3) shared appreciation mortgages, 4) housing partnerships, 5) shared equity mortgages and 6) sale of remainder interest. Modifications of these forms involving real estate price indices are proposed that might deal better with the problem of moral hazard.

Abstract

An indexed unit of account is a money analogue, used to express prices; the unit’s purchasing power is defined by an index. Indexed units of account are not true money in that they are not used as a medium of exchange. The first successful indexed unit of account, the Unidad de Fomento (UF) has been used in Chile since 1967, and has been copied in Colombia, Ecuador, Mexico, and Uruguay. The reasons for creating such units are discussed from the standpoint of monetary theory. The experience with such units in Chile is discussed. It is argued that important practical problems in implementing indexation are solved by creating such indexed units of account. The author advocates creating such units in other countries, even countries with relatively low rates of inflation such as the United States, and argues that an alternative definition of the units, relating the units to measures of income, may also be advantageous. Ideally, such indexed units of account might someday be “monetized,” i.e., institutions such as debit cards may be devised to allow the units to be used for all transactions, so that the role of conventional money might be reduced to clearing-house functions only.

Abstract

There is a large potential for improving individual risk management through new risk management contracts and associated new index-settled derivatives. However, there are some difficult problems in designing contracts so that they will be used effectively. Individuals have idiosyncratic individual risks that can be hedged only at some real resource cost due to moral hazard. Individuals seem to exhibit behavior indicative of lack of appreciation of the principles of risk management. These problems are discussed, and some potential new risk management contracts that would make improvements in the management of major income risks are proposed.

Abstract

A questionnaire survey was conducted to explore how people think about inflation, and what real problems they see it as causing. With results from 677 people, comparisons were made among people in the U.S., Germany, and Brazil, between young and old, and between economists and non-economists. Among non-economists in all countries, the largest concern with inflation appears to be that it lowers people’s standard of living. Non-economists appear often to believe in a sort of sticky-wage model, by which wages do not respond to inflationary shocks, shocks which are themselves perceived as caused by certain people or institutions acting badly. This standard of living effect is not the only perceived cost of inflation among non-economists; other perceived costs are tied up with issues of exploitation, political instability, loss of morale, and damage to national prestige. The most striking differences between groups studied were between economists and non-economists. There were also important international and intergenerational differences.

Review of Income and Wealth
Abstract

Labor income indices are created for groupings of individuals, using data from the Panel Study of Income Dynamics. People are grouped by a clustering algorithm based on an estimated transition matrix between jobs, by education level, and by skill category. The groups are defined so that relatively few people move between them. For each of the groupings, we generate a labor income index using a hedonic repeated-measures regression methodology. Similarities between pairs of indices and between indices and individual labor incomes are described. It is argued that indices like those presented here might someday be used in settlement formulae in contracts promoting income risk management.