NUDGE: IMPROVING DECISIONS ABOUT HEALTH, WEALTH, AND HAPPINESS by Richard H. Thaler and Cass R. Sunstein Penguin Books, 2009, 312 pp, ISBN 978-0-14-311526-7This book is best described formally as a general explanation of and advocacy for libertarian paternalism, a term coined by the authors in earlier publications. Informally, it is about how leaders, systems, organizations, and governments can nudge people to do the things the nudgers want and need done for the betterment of the nudgees, or of society. It is paternalism in the sense that "it is legitimate for choice architects to try to influence people's behavior in order to make their lives longer, healthier, and better", (p. 5) It is libertarian in that "people should be free to do what they like - and to opt out of undesirable arrangements if they want to do so", (p. 5) The built-in possibility of opting out or making a different choice preserves freedom of choice even though people's behavior has been influenced by the nature of the presentation of the information or by the structure of the decisionmaking system. I had never heard of libertarian paternalism before reading this book, and I now find it fascinating.Written for a general audience, this book contains mostly social and behavioral science theory and models, but there is considerable discussion of structure and process that has roots in mathematical and quantitative modeling. One of the main applications of this social system is economic choice in investing, selecting and purchasing products and services, systems of taxes, banking (mortgages, borrowing, savings), and retirement systems. Other quantitative social choice systems discussed include environmental effects, health care plans, gambling, and organ donations. Softer issues that are also subject to a nudge-based approach are marriage, education, eating, drinking, smoking, influence, spread of information, and politics. There is something in this book for everyone.The basis for this libertarian paternalism concept is in the social theory called "science of choice", the study of the design and implementation of influence systems on various kinds of people. The terms Econs and Humans, are used to refer to people with either considerable or little rational decision-making talent, respectively. The various libertarian paternalism concepts and systems presented are tested and compared in light of these two types of people. Two foundational issues that this book has in common with another book, Network of Echoes: Imitation, Innovation and Invisible Leaders, that was also reviewed for this issue of the Journal are that 1 ) there are two modes of thinking (or components of the brain) - an automatic (intuitive) process and a reflective (rational) process and 2) the need for conformity and the desire for imitation are powerful forces in human behavior. …

Nudge: Improving Decisions about Health, Wealth, and Happiness

行銷硏究 : Marketing research

25. Multiple Imputation for Nonresponse in Surveys. By D. B. Rubin. ISBN 0 471 08705 X. Wiley, Chichester, 1987. 258 pp. £30.25.

Multiple Imputation for Nonresponse in Surveys

We investigate conditions sufficient for identification of average treatment effects using instrumental variables. First we show that the existence of valid instruments is not sufficient to identify any meaningful average treatment effect. We then establish that the combination of an instrument and a condition on the relation between the instrument and the participation status is sufficient for identification of a local average treatment effect for those who can be induced to change their participation status by changing the value of the instrument. Finally we derive the probability limit of the standard IV estimator under these conditions. It is seen to be a weighted average of local average treatment effects.

Evolution and Rationality Some Recent Game-Theoretic Results. Identification and Estimation of Local Average Treatment Effects

This paper undertakes an assessment of a rapidly growing body of economic research on financial literacy. We start with an overview of theoretical research which casts financial knowledge as a form of investment in human capital. Endogenizing financial knowledge has important implications for welfare as well as policies intended to enhance levels of financial knowledge in the larger population. Next, we draw on recent surveys to establish how much (or how little) people know and identify the least financially savvy population subgroups. This is followed by an examination of the impact of financial literacy on economic decision-making in the United States and elsewhere. While the literature is still young, conclusions may be drawn about the effects and consequences of financial illiteracy and what works to remedy these gaps. A final section offers thoughts on what remains to be learned if researchers are to better inform theoretical and empirical models as well as public policy.

/pdf/the-economic-importance-of-financial-literacy-theory-and-17mb1g4cfb.pdf

The Economic Importance of Financial Literacy: Theory and Evidence

Introduction: Debt in an Aging Economy

We assess the importance of the precautionary saving motive by relying on a direct question about precautionary wealth from the 1995 and 1998 waves of the Survey of Consumer Finances. In this survey, a new question has been designed to elicit the amount of desired precautionary wealth. This allows us to bound the amount of precautionary accumulation and to overcome many of the problems of previous works on this topic. We find that a precautionary saving motive exists and affects virtually every type of household. Even though this motive does not give rise to large amounts of wealth for young and middle-age households, it is particularly important for two groups: older households and business owners. Overall, we provide strong evidence that we need to take the precautionary saving motive into account when modeling saving behavior.

Disentangling the Importance of the Precautionary Saving Mode

Household saving is still little understood, and even the basic facts â€“ for instance: How does saving change over the life cycle? Does saving turn negative in old age? â€“ are controversial. Understanding saving behavior is not only an important question of economic theory because the division of income in consumption and saving concerns one of the most fundamental household decisions, but it is also of utmost policy relevance. One reason is that private household saving as a private insurance interacts with social policy as public insurance. Population ageing and its threat to the sustainability of the public insurance systems have put the spotlight back on own saving as a device for old-age provision. Solving the pension crises therefore requires understanding saving. Another reason is growth: capital accumulation through saving increases economic growth directly, and indirectly through changes in labor productivity. The topic of household savings is by no means uncharted territory. Recent comprehensive surveys of the work on saving include Deaton (1992), Browning and Lusardi (1996), and Attanasio (1999). These surveys illustrate the many challenges the theory faces in matching the empirical facts about saving as well as the need to use micro data to understand saving behavior. This volume adds a distinctive international dimension to these studies of saving. It presents the results of the "International Savings Comparison Project" â€“ a project performed under the auspices of a European Union sponsored network of researchers.4 The main focus of this project is the interaction of household saving with public policy, notably the generosity of public pension systems. In this sense, our work is very much in the tradition of Feldsteinâ€™s (1974) seminal study. However, we transpose the inference from time series data to a set of international panel data drawn from six country studies. These studies analyze household saving in four European countries â€“ Germany, Italy, the Netherlands and the United Kingdom â€“ and in Japan and the United States.

Saving Viewed from a Cross-National Perspective

La importancia económica de la alfabetización financiera: teorías y pruebas

We use two micro data sets that collect harmonized data across countries to investigate the effects of regulation on new businesses. We are able to distinguish between two types of entrepreneurs: those who start a business to pursue a business opportunity and those who start a business because they could not find better work. Irrespective of the measure of regulation we use, we always find a detrimental effect of regulation on entrepreneurship. While women are overall less likely to start new businesses, in more regulated countries women are pulled into entrepreneurship not to pursue a business opportunity but because they could not find better work. Moreover, regulation dampens the effects of self-assessed business skills and social networks. In more regulated economies, those with better business skills and those who know other entrepreneurs are less likely to become entrepreneurs to pursue a business opportunity. Tighter regulation also exacerbates fear of failure, further discouraging business start-up. All our estimates point to a negative effect of regulation.

Annamaria Lusardi

Papers

Introduction: Debt in an Aging Economy

Disentangling the Importance of the Precautionary Saving Mode

Saving Viewed from a Cross-National Perspective

La importancia económica de la alfabetización financiera: teorías y pruebas

Where does regulation hurt? Evidence from new businesses across countries