HETEROGENEOUS RISK ATTITUDES IN A CONTINUOUS‐TIME MODEL*

We prove that every continuous‐time model in which all consumers have time‐homogeneous and time‐additive utility functions and share a common probabilistic belief and a common discount rate can be reduced to a static model. This result allows us to extend some of the existing results of the representative consumer and risk‐sharing rules in static models to continuous‐time models. We show that the equilibrium interest rate is lower and more volatile than in the standard representative consumer economy, and that the individual consumption growth rates are more dispersed than in the absence of uncertainty.     

A NOTE ON “A ONE‐SECTOR NEOCLASSICAL GROWTH MODEL WITH ENDOGENOUS RETIREMENT”: EXISTENCE OF MULTIPLE STEADY STATES*

This note extends Matsuyama's 0–1 endogenous retirement choice model to the framework with continuous endogenous retirement choice to study the consumption‐saving decision and capital accumulation in an overlapping generation model. The conditions for the existence of multiple steady states have been derived. In contrast to the 0 or 1 labour choice, the partial retirement may be a stable steady state under the continuous endogenous retirement choice in the second period. And this implies that partial retirement may be a stable optimal choice. Also, we find that the retirement choice depends on the initial capital stock when there are multiple steady states.     

PERFORMANCE‐BASED FEE CONTRACT AND RISK‐TAKING STRATEGY IN ASSET MANAGEMENT TOURNAMENT

This paper investigates how performance‐based fee (PBF) contracts affect strategic risk‐taking behaviours of fund managers in an asset management tournament. In the perfect equilibrium, managers with better mid‐year performance will hold the risky asset with a higher probability in the remaining of the year, compared to managers with poorer mid‐year performance. If the volume of the cash flow into the winner fund is contingent on its level of success, the winning fund will take a more aggressive approach. When the PBF contract pays more heed to relative performance against the benchmark, managers are more likely to adopt aggressive strategies.     

THE CASE FOR PAY-AS-YOU-GO PENSIONS IN A SERVICE ECONOMY

The elderly consume more labour‐intensive services than young individuals. This makes them vulnerable to rising costs of services due to higher wages, which can be caused by increased capital accumulation. This paper shows that in a model with a service sector, the golden‐rule capital stock is lower and dynamic inefficiency is more likely to occur than in the conventional one‐sector model. This implies that in many cases, a positive Pay‐As‐You‐Go tax maximises long‐run welfare in a service economy. Calculations based on data from the United Kingdom and the Netherlands show that the long‐run optimal degree of funding coincides with the current situation in these countries.     

JOB FLOWS AND UNEMPLOYMENT IN AN EQUILIBRIUM UNEMPLOYMENT MODEL WITH FIRM‐SPECIFIC SKILL TRAINING*

We introduce productivity enhancing firm‐specific skill training into the labour search model in which the firm‐specific skill training intensity and the job destruction rate are endogenously determined. It is shown that the higher the intensity of such training, the lower the rates of unemployment, job creation and job destruction. The paper's model provides a theoretical framework to understand the often mentioned peculiarity of the Japanese labour market; prevalently low rates of unemployment, job creation and job destruction in Japan are due to its training system which promotes workers to acquire firm‐specific skills.     

SECTOR‐SPECIFIC EXTERNALITIES AND STATUS PREFERENCES IN THE UZAWA‐LUCAS MODEL*

This paper shows that introducing preferences for social status based on human capital holdings modifies the finding of Gómez (2004 ) that sector‐specific externalities associated with human capital in the goods sector do not violate the optimality of the competitive economy in the Uzawa–Lucas model. The effect of an increase in the degree of sector‐specific externalities is qualitatively the same as that of an increase in the strength of the desire for status. Hence, paradoxically, a greater degree of sector‐specific externalities makes human capital accumulation more excessive from the social point of view.     

PERIODIC,COMPLETE‐PARTICIPATION TRADE IN THE LAGOS‐ROCHETEAU MODEL

This paper contributes to a recent policy discussion regarding the costs and benefits of setting up a centralized electronic trading platform to replace over‐the‐counter (OTC) markets. We modify the Lagos and Rocheteau (2009, henceforth LR) asset trading model by replacing their investor‐dealer random matching and bilateral trade with a centralized competitive market that opens periodically. This arrangement preserves the main tension and trade‐off in LR. We then analyse and quantify when to introduce a centralized market and how frequently it should open in order to make it as efficiently as the decentralized OTC market in LR.     

OPTIMAL TRANSITION DYNAMICS IN THE LEONTIEF TWO‐SECTOR GROWTH MODEL WITH DURABLE CAPITAL: THE CASE OF CAPITAL INTENSIVE CONSUMPTION GOODS*

We present results on undiscounted optimal policies in the Leontief two‐sector growth model with durable capital. Unlike the results with a labour intensive consumption goods sector, we show that a monotonic optimal programme is only one special case out of many richer possibilities of transition dynamics. Depending on the initial capital stock, and a key parameter ζ that could be interpreted as a marginal rate of transformation of capital between today and tomorrow, an optimal programme may converge to a period‐two cycle; and even when it converges to the golden rule stock, it can do so (damped) cyclically or with a “jump”.     

THE TRANSMISSION OF THE MONETARY POLICY IN THE EURO AREA: THE ROLE OF THE BANKS’ BUSINESS MODEL

This paper sheds some new light on the incidence of the banks’ business model as a component of the bank lending channel in the euro area. Differently from existing literature, the analysis is led on the basis of the two main macroeconomic regions that today characterize the euro area: its north‐east (German‐centric) and south‐west halves. The observation period is 2008–2013, mainly featured by the financial and economic crisis. The empirical findings evidence that in the north‐east half of the euro area the cooperative banks leveraged the effects of the reduction in the interest rates in terms of new lending. In this respect, they differentiated from commercial and savings banks, which showed a more neutral impact on the transmission of the monetary policy decisions. These results highlight the distinctive role of the cooperative banks in terms of credit provision in Germany and in the whole north‐east half of the euro area. Nevertheless, this cooperative banking effect did not emerge for the south‐west half of the continent, particularly hit by the crisis. This may suggest that the bank's business model tend to be neutral to the transmission of the monetary policy in economies characterized by prolonged recessions.     

Estimating Consumption Responses to Income Shocks of Different Persistence Using Self‐Reported Income Measures

Models of intertemporal consumption choice posit that consumption reacts more strongly to income shocks with persistent effects than to shocks with temporary effects. This prediction is tested using data from the Estonian Household Budget Surveys for 2002–07. Questions in the survey make it possible to distinguish between two income components of different persistence, using the individual households’ subjective income classification. Estimations confirm that households distinguish income components of different persistence and react to these differently; the consumption response to income shocks with persistent effects is significantly higher than the response to shocks with only temporary effects. Further analysis reveals, however, that consumption also reacts to lagged shocks to temporary income even when the households are not liquidity constrained, suggesting that their behavior is not fully consistent with the standard forward‐looking unconstrained consumption models.     

FREE VERSUS SECOND‐BEST ENTRY IN COURNOT OLIGOPOLIES WITH FIRM‐SPECIFIC NETWORKS

This paper endogenizes the number of firms in an industry with positive network effects, complete incompatibility, and firms that compete in quantity. To this end, we compare two possibilities: free entry and second‐best number of firms (the one that maximizes social welfare). We show that with business‐stealing competition, free entry yields, in general, more firms than the socially optimal solution. In addition, we find that by the nature of the industry with firm‐specific networks, total production may be greater or lower under free entry than with a regulator; moreover, some industries attain their maximum social welfare with a monopoly.     

OPTIMAL GROWTH IN A TWO‐SECTOR RSS MODEL WITHOUT DISCOUNTING: A GEOMETRIC INVESTIGATION*

This essay reports results on optimal growth in a two‐sector model with fixed coefficients, irreversible investment and no discounting. Under normalization, the model can be represented by two real numbers, but despite its deceptive simplicity, it admits rich transition dynamics and apparent pathologies that seem to have been missed in earlier work. From a methodological point of view, and in the light of recent work of Nishimura and Yano, this essay can also be seen as a further rehabilitation of geometric methods as an engine of analysis.     

THE EFFECTS OF THE BANK OF JAPAN'S ZERO INTEREST RATE COMMITMENT AND QUANTITATIVE MONETARY EASING ON THE YIELD CURVE: A MACRO‐FINANCE APPROACH*

This paper empirically investigates the effects of the Bank of Japan's (BOJ) zero interest rate commitment and quantitative monetary easing on the yield curve. Applying a macro‐finance approach, we decompose interest rates into expectations and risk premium components and extract the market's perception of the BOJ's policy stance. We make clear the counterfactual policy without the BOJ's commitment. We find some evidence that the commitment lowered interest rates and mat raising the reserve target may have been perceived as a signal indicating the BOJ's accommodative policy stance. The portfolio rebalancing effect has not been found to be significant.     

MULTIPLIER EFFECTS OF PUBLIC SERVICES IN A TWO‐SECTOR MODEL OF MONOPOLISTIC COMPETITION

In a two‐sector model of monopolistic competition, this paper explores what impacts an expansion of government spending on public services has on national income. In the short run where entry and exit of firms are restricted, a rise in government spending on services like health care (which has only a role of substituting for market services) increases national income, but that on services like elderly care (which has not only this role but also another role of contributing to home production of services) decreases it. These results are reversed in the long run. Welfare effects of public services are also examined.     

UNIQUENESS AND INDETERMINACY OF THE EQUILIBRIUM GROWTH PATH IN THE UZAWA‐LUCAS MODEL WITH SECTOR SPECIFIC EXTERNALITIES*

We introduce sector specific external effects of human capital on production in an otherwise Uzawa‐Lucas model of endogenous growth; and show that the problem of indeterminacy of the competitive equilibrium growth path does not exist even if the production function satisfies the increasing returns to scale at the social level.     

SOME OBSERVATIONS ON THE HIGH‐FREQUENCY VERSIONS OF A STANDARD NEW‐KEYNESIAN MODEL

In a small‐scale New‐Keynesian model with a hybrid Phillips curve and IS equation, the paper is concerned with an arbitrary frequency of the agents’ synchronized decision making. It investigates the validity of a fundamental methodological precept according to which no substantive prediction or explanation of a well‐defined macroeconomic period model should depend on the real time length of the period. While this principle is basically satisfied as the period goes to zero, the impulse – response functions of the high‐frequency versions can qualitatively as well as quantitatively be fairly dissimilar from their quarterly counterpart. The result proves to be robust under variations of the degree of price stickiness. The main conclusion is that DSGE modelling may be more sensitive to its choice of the agents’ decision interval.     

INEQUALITY AND AGGREGATE DEMAND IN THE IS‐LM AND IS‐MP MODELS

This paper presents an extension to the textbook IS‐LM and IS‐MP models that allows the short run effects of an increase in household income inequality to be studied in a simple manner. The income distribution is assumed to be log‐normal, and the coefficient of variation of income is assumed to be exogenous. The latter is used as the measure of income inequality, and enters otherwise standard IS and LM curves in a straightforward manner. While the models are highly stylised, they can easily be extended to more complicated variants.     

INSUFFICIENT ENTRY OF EMPLOYEE‐CONTROLLED FIRMS IN A FREE‐ENTRY OLIGOPOLY

This study is a theoretical examination of whether employee‐controlled firms (ECFs) enter a free‐entry oligopolistic market excessively or insufficiently, from the viewpoint of welfare maximization. The excess entry theorem is well known in oligopoly theory. According to this theorem, a greater number of profit‐maximizing firms enter a free‐entry oligopolistic market than is optimal for welfare maximization. We demonstrate the possibility that insufficient entry arises when ECFs compete in a free‐entry market. In particular, we show that if both the demand and cost functions are convex, insufficient ECF entry necessarily occurs. Our results suggest that competition among firms seeking purposes other than profit might lead to insufficient entry because differences in competing firms’ objectives affect the intensity of market competition.     

SOCIAL STATUS,EDUCATION AND GOVERNMENT SPENDING IN A TWO‐SECTOR MODEL OF ENDOGENOUS GROWTH*

This paper extends the relative wealth specification of status preference to the two‐sector Uzawa (1965 )– Lucas (1988 ) model and examines the effectiveness of government spending on economic growth. It is found that the desire for relative wealth‐induced social status and/or the education component of relative wealth‐induced social status are important ingredients in determining the growth rate effects of government spending. Provided that the agent is concerned with his or her relative social position, the education‐induced social status plays a more important role than the physical‐asset‐induced social status in determining the validity of public spending on growth. If individuals do not care about their education‐driven social rewards, then an increase in government spending has no effect on the balanced growth rate regardless of the presence of the physical‐asset‐induced social status. A rise in government spending reduces the long‐run growth rate if the education‐induced social status is present.     

Self‐Directed Pensions: Gender,Risk, and Portfolio Choices*

In this paper, I investigate gender differences in financial risk‐taking from a new perspective, and I show that gender plays a different role across the risk distribution. To evaluate risk‐taking, I exploit portfolio choices following a reform that entitles almost the entire Swedish workforce to choose a risk profile for a part of their public‐pension contributions. The novel finding is that portfolio risk does not differ much between the men and women who choose less risky portfolios, while the men who choose risky portfolios take on significantly more risk than do the women who choose risky portfolios. The findings are robust to investors choosing the default alternative, chasing past returns, rebalancing, and different measures of risk‐taking.