The role of domestic savings in outward-oriented growth strategies

This paper presents a theory of technological catching-up in which local savings plays a key complementary role to international finance and foreign technology. Until now, the literature has primarily emphasized “outward orientation” as the key ingredient of catching-up success. It has indeed been argued that countries which have relied intensively on foreign technologies, either through capital goods imports or foreign direct investment inflows, have been successful while countries which have opted for inward-oriented growth strategy relying on domestic investment and import-substitution strategies have been unsuccessful. In this paper, we develop a sequential model of industrialization in which domestic savings is key to the success of outward-oriented growth strategies. Indeed, internal finance helps to overcome time-to-adjustment constraints which occur in the early phases of the catching-up process when both advanced foreign technologies and backward domestic ones co-exist. In this model, external finance, though international borrowing, and domestic savings are complementary, not substitutable, in the course of technological catching-up.

Reciprocity in evolving social networks

We study the viability of conditional cooperation in a dynamically evolving social network. The network possesses the small world property, with high clustering coefficient but low characteristic path length. The interaction among linked individuals takes the form of a multiperson prisoners’ dilemma, and actions can be conditioned on the past behavior of one’s neighbors. Individuals adjust their strategies based on performance within their neighborhood, and both strategies and the network itself are subject to random perturbation. We find that the long-run frequency of cooperation is higher under the following conditions: (i) the interaction radius is neither too small nor too large, (ii) clustering is high and characteristic path length low, (iii) the mutation rate of strategies is small, and (iv) the rate of adjustment in strategies is neither too fast nor too slow.

UNCERTAINTY AVERSION AND PORTFOLIO INERTIA

In stock markets, we often observe portfolio inertia, i.e., a situation in which some stocks are not traded or not priced for a few minutes or longer. This is neither an exceptional situation in which some stock price soars too high to be priced, nor the one where some stock price plummets too much to be traded. By introducing the concept of ‘Knightian uncertainty’, Dow and Werlang (1992) account for the existence of portfolio inertia, which has not been accounted for under the concept of ‘risk’. This paper provides a characterization of the spread between buying and selling prices based on a parameter proposed by Ozaki and Streufert (1999, 2001) that enables us to estimate the attitude towards Knightian uncertainty, and shows that an increase (a decrease) in Knightian uncertainty expands (shrinks) the interval in which an investor never changes her initial position. Furthermore, we analyse the effect of an increase in Knightian uncertainty on portfolio inertia based on Epsilon‐contaminations.     

Local Transportation Policy and the Environment

The paper introduces a simple framework for analyzing the environmental effects of local transportation policies, and it reviews some evidence. In several cases, subsidies for local public transportation have led to substantial reductions in road transportation and have thereby reduced externalities. Some but not all estimates suggest positive overall welfare effects of such policies. In the rare cases where road pricing has been applied, it has helped to reduce automobile transportation, and it has led to environmental improvements. The experience with specific driving restrictions like “days without cars” and “low emission zones” has been mixed. Local transportation policy can have a useful role to play as a complement to national policy instruments, but neither efficiency nor effectiveness can be taken for granted.     

SAVINGS AND PERSONAL DISCOUNT RATES IN A MATCHED SAVINGS PROGRAM FOR LOW‐INCOME FAMILIES

The ability to save for future needs is critical to family well‐being and is especially challenging for low‐income families with little extra income and limited access to institutional structures like employment‐based retirement funds or low cost savings mechanisms. Many nonprofits and governments have created new savings vehicles to fill this void. The ability of families to succeed in these programs may depend on their personal discount rates (time preferences). In this paper, we use survey data from a matched savings program and factor analysis to characterize family time preferences in order to predict their influence on savings levels. We find that a single latent factor describing the level of discount rates (rather than other dimensions of time or amount inconsistency) best describes family differences and is significantly related to the ability of families to save within the program. (JEL D91, I30)     

Public-private partnerships in micro-finance: Should NGO involvement be restricted?

This paper examines public–private partnerships in micro-finance, whereby NGOs can help in channelizing credit to the poor, both in borrower selection, as well as in project implementation. We argue that a distortion may arise out of the fact that the private partner, i.e. the NGO, is a motivated agent. We find that whenever the project is neither too productive, nor too unproductive, reducing such distortion requires unbundling borrower selection and project implementation, with the NGO being involved in borrower selection only. Further, we compare and contrast two alternative credit delivery mechanisms, the linkage mechanism (which is the focus of this paper), with the ‘Grameen’ one.     

Typicality and Novelty: Schütz and Shackle on the Paradox of Choice

This paper discusses the thoughts of the Austrian/American phenomenologist Alfred Schütz (1899–1959) and the British economist George Shackle (1903–1992) and their views on choice, which are in many ways very different, perhaps even inconsistent, but also complementary and may even have some shared elements. This is in particular so with regard to the problem of the paradox of choice, the overall insight that for choice to be informative, it must neither be predetermined nor random. Shackle has mainly focused on the creative aspect—on how choice originates while Schütz has tended to focus more on how people are able to make non-random choices by referring to the typical features of action. The paper argues that there are many differences Schütz and Shackle. The possibility that they are complementary approaches is indicated.     

The nature and units of social selection

On the basis of the technical definition of selection developed by George Price (1995), we describe two forms of selection that commonly occur at the social level, subset selection and generative selection. Both forms of selection are abstract and general, and therefore also incomplete; both leave aside the question of explaining the selection criterion and why entities possess stable traits. However, an important difference between the two kinds of selection is that generative selection can accommodate an explanation of how new variation is created, while subset selection cannot. An evolutionary process involving repeated cycles of generative selection can, in principle, continue indefinitely because imperfect replication generates new variation along the way, whereas subset selection reduces variation and eventually grinds to a halt. Even if the two kinds of selection are very different, they share a number of features. First, neither subset selection nor generative selection implies improvement: neither kind of selection necessarily leads to efficiency or implies systematic outcomes. Second, both subset selection and generative selection can lead to extremely rapid effects in a social population. Third, in the social domain, both generative selection and subset selection involve choice and preference in some way: neither form of selection necessarily excludes intentionality. In concluding the article, we single out a challenge for future research in identifying the role of various units of culture in selection processes and the multiple levels at which social selection processes take place.     

Strategy-Specific Barriers to Learning and Nonmonotonic Selection Dynamics

The replicator dynamics are generalized to allow for strategy-specific barriers to learning. The resulting dynamics satisfy neither payoff monotonicity nor payoff positivity, but do satisfy weak payoff positivity. It is shown that initial states from which trajectories converge to a rest point under the replicator dynamics may yield trajectories which approach a stable limit cycle under the generalized replicator dynamics. Furthermore, strategies which are strictly dominated by other pure strategies may survive indefinitely along such nonconvergent paths.Journal of Economic LiteratureClassification Numbers: C73.     

Endogenous growth cycles in an overlapping generations model with investment gestation lags

Summary. A simple overlapping generations model with investment gestation lags is constructed. The model shows that, if the technology is of the AK type with capital-deepening externalities, the existence of investment gestation lags always generates permanent cyclical fluctuations in the economic growth rate. The mean growth rate is shown to be positive if the external effect is strong. The model also shows that, if the production technology takes the Cobb-Douglas form, there exists a unique steady state in which the economy exhibits neither cyclical fluctuations nor long-run growth.Received: 3 July 2003, Revised: 3 December 2003, JEL Classification Numbers: E32, B13. Correspondence to: Akiomi KitagawaAkiomi Kitagawa, Akihisa Shibata: The authors would like to thank Yasushi Iwamoto, Kazuo Mino, an anonymous referee and seminar participants at the Macroeconomics Workshop for their helpful comments and suggestions. Financial support from the Ministry of Education, Culture, Sports, Science and Technology of Japan is gratefully acknowledged.     

PENSION CONTRIBUTIONS,PENSION AWARENESS,AND CHANGING PERSONAL FINANCES

Workers with 401(k)s and similar defined contribution pensions adjust contributions facing large fluctuations in personal finances. Using administrative tax records linked to the Health and Retirement Study, this paper shows that adjustments differ for contributors who are aware and unaware of their pension coverage. Unaware contributors are more likely to stop contributing facing deteriorating finances, but adjust contributions similarly along the intensive margin. For example, 25% of unaware contributors stop contributing facing earnings declines, but only 15% of aware contributors do so. These findings have implications for policies like automatic enrollment and information campaigns that encourage retirement savings. (JEL D14, J14, J32, D83)     

Determinants of household savings in China and their role in quasi‐money supply1

This study derives household saving potential empirically from econometric models of Chinese urban and rural household consumption and uses this potential to explain household bank deposits. Model simulations are performed to analyse the effects of interest rates, income and income uncertainty on the saving potential and the bank deposits. The bank deposits variable is then used to explain quasi‐money supply. High bank absorption of household savings is found to account mainly for the rapid growth in quasi‐money, which in turn explains the exceptionally high M2/GDP ratio. Households’ savings are largely predictable from their regular consumption.     

Can rational individuals keep money under their mattresses forever?

Summary Conditions are given for an infinite horizon consumption-savings model under which savings are bounded away from 0 with probability 1 even in the long-run. That is, with probability 1 there exists a timeT and a minimum level of savingsS such fort > T savings will always be greater thanS. I would like to thank Graziella Bertocchi, Oded Galor, Basilis Gidas, Gil Skillman, David Weil and seminar participants at Brown University. I am also very grateful to an anonymous referee for many useful suggestions.     

Gender differences in time preferences

This paper reports the results from a large online experiment in which we examine gender differences in time preferences. Subjects choose in different situations between receiving an immediate payment and receiving a different sum later. We find that more men than women are impatient and choose to receive the immediate payment, at least if the implicit interest rate of the “late” option is neither too high nor too low.     

Relative Performance Evaluations in a Model of Financial Intermediation

This paper focuses on the delegation by bank managers of lending decisions to their agents, typically subordinate employees of the bank. We assume that agents may base their decisions about lending to borrowers on decisions other banks have made about these same borrowers. Then we show that there exist some lazy or negligent agents who neither directly monitor the borrower nor imitate the other banks if managers use relative performance evaluations as incentive schemes. In addition, it is shown that the learning or adjustment process of agents exhibits cyclical dynamics. Journal of Economic Literature Classification Numbers: D82, D83.     

Tear down this wall: on the persistence of borders in trade

Abstract Why do borders still matter for economic activity? The reunification of Germany in 1990 provides a unique natural experiment for examining the effect of political borders on trade. With the fall of the Berlin Wall and the rapid formation of a political and economic union, strong and strictly enforced administrative barriers to trade between East Germany and West Germany were eliminated completely within a very short period of time. Remarkable persistence in intra‐German trade patterns along the former East‐West border suggests that border effects are neither statistical artefacts nor driven by administrative barriers to trade, but arise from economic fundamentals.     

A note on the hidden risk of inflation

The continued expansionary policy of the Federal Reserve gives rise to speculation whether the Fed will be able to maintain price stability in the coming decades. Most of the scientific work relating money to prices relies on broad monetary aggregates (i.e. M₂ for the United States). In our paper, we argue that this view falls short. The historically unique monetary expansion has not yet fully reached M₂. Using a cointegration approach, we aim to show the hidden risks for the future development of M₂ and correspondingly prices. In a simulation analysis we show that even if the multiplier remains substantially below its pre-crisis level, M₂ will exceed its current growth path with a probability of 95%.     

A re-examination of the savings displacement hypothesis

This paper re-examines the savings displacement hypothesis. It uses a new dataset that disaggregates aid into project aid, financial programme aid, technical assistance grants and programme food aid. When considering the whole sample of 97 countries, results obtained from estimating a savings function using the GMM-System approach to dynamic panel suggest that project aid flows are the only type of aid exerting a negative effect on domestic savings. The results also show that the effects of the different categories of aid on domestic savings vary across regions, thus highlighting the importance of regional disaggregation in cross-country studies. The author would like to thank Jean-Louis Grolleau at the OECD Credit Reporting System for his helpful advice and his encouragements during the construction of the disaggregated aid database used in this paper.     

Unemployment insurance with hidden savings

This paper studies the design of unemployment insurance when neither the searching effort nor the savings of an unemployed agent can be monitored. If the principal could monitor the savings, the optimal policy would leave the agent savings-constrained. With a constant absolute risk-aversion (CARA) utility function, we obtain a closed form solution of the optimal contract. Under the optimal contract, the agent is neither saving nor borrowing constrained. Counter-intuitively, his consumption declines faster than implied by Hopenhayn and Nicolini (1997) [1]. The efficient allocation can be implemented by an increasing benefit during unemployment and a constant tax during employment.     

REVEALED POLITICAL POWER

When is a polity biased? Consider an “outsider” who observes policy data but observes neither citizens’ preferences nor the underlying distribution of political power. He views political power as if it were derived from wealth‐weighted voting, where the weights determine the wealth bias. Positive weights favor the rich whereas negative ones favor the poor. We show that any policy data is rationalized by any wealth‐weighted system. However, policy and polling observations together imply explicit bounds on the set of rationalizing biases. Accumulated data narrows this band. The inferential model is consistent with models of political competition for campaign contributions.