Peer Group Formation in an Adverse Selection Model

This paper develops an adverse selection model where peer group systems are shown to trigger lower interest rates and remove credit rationing in the case where borrowers are uninformed about their potential partners and ex post state verification (or auditing) by banks is costly. Peer group formation reduces interest rates due to a 'collateral effect', namely, cross subsidisation amongst borrowers acts as collateral behind a loan. By uncovering such a collateral effect, this paper shows that peer group systems can be viewed as an effective risk pooling mechanism, and thus enhance efficiency, not just in the full information set up.     

Dual Financial Systems and Inequalities in Economic Development

This paper analyzes the emergence and the evolution of a modern banking system, in a developing economy where banks coexist with informal credit institutions. Banks have a superior ability in mobilizing savings while informal lenders enjoy a superior information on borrowers. More specifically, banks cannot observe perfectly the behavior of borrowers; therefore the latter need to provide collateral assets in order to obtain bank loans. Physical collateral is not needed to borrow in the informal credit market: informal lenders can rely on social networks to obtain information on borrowers' behavior and invoke social sanctions to enforce repayment. The sustained growth path is associated with the successful development of the banking system that gathers savings on a large scale. However, informal lenders and other traditional credit institutions are necessary in the first stage of development when collateral is scarce. In this economy, the development of modern financial intermediaries is closely associated with the accumulation of collateral assets by entrepreneurs. This implies that the initial level of development as well as the initial distribution of wealth will determine the joint evolution of the real side of the economy and the financial system. Under certain conditions, two long-run steady-state equilibria exist: in the first one the economy stops growing and the banking system never successfully develops; in the second one the economy reaches a sustained growth rate and the informal sector asymptotically vanishes. The impact of the following policies is discussed: financial repression, micro-credit institutions and redistribution of assets.     

Group lending and individual lending with strategic default

Papers that compare group lending and individual lending in the presence of strategic default suggest that unless group members can impose costly social sanctions on one another, or unless the bank uses cross-reporting mechanisms group lending may do worse than individual lending. In this paper, we show that if, (1) the amount that a successful borrower owes for his defaulting partner is optimally determined, and (2) the penalty is allowed to vary across group members, then even in the absence of any social sanctions or cross-reporting, (1) expected borrower welfare is strictly higher with group lending when both group lending and individual lending are feasible and (2) group lending is feasible for a greater range of opportunity cost of capital. These results are robust to collusion between borrowers.     

The suspension of borrowing: an implicit penalty for loan default under imperfect information

A credit seeker may be suspended from borrowing for a period of time due to a previous default. Such suspension is widely used in bank lending through credit check. Our work analyses the effects of suspension on the investment choice of borrowers under uncertainty and on the lending policy of banks facing asymmetric information. We show that suspension should be tightened at low loan rates, but loosened otherwise, to improve the repayment performance of borrowers. We also show that although credit rationing may not be completely removed due to imperfect information, the excess demand for credit or transitive waiting in the market can actually be attenuated by such efficient use of suspension. Our theoretical predictions are consistent with observed cyclical patterns of changes in lendingrates and suspension severity.     

Screening by the Company You Keep: Joint Liability Lending and the Peer Selection Effect

We look at an economic environment where borrowers have some information about the nature of each other's projects that lenders do not. We show that joint-liability lending contracts, similar to those used by credit cooperatives and group-lending schemes, will induce endogenous peer selection in the formation of groups in a way that the instrument of joint liability can be used as a screening device to exploit this local information. This can improve welfare and repayment rates if standard screening instruments such as collateral are unavailable.     

Microfinance Beyond Group Lending

Microlending is growing in Eastern Europe, Russia and China as a flexible means of widening access to financial services, both to help alleviate poverty and to encourage private-sector activity. We describe mechanisms that allow these programmes to successfully penetrate new segments of credit markets. These features include direct monitoring, regular repayment schedules, and the use of non-refinancing threats. These mechanisms allow the programmes to generate high repayment rates from low-income borrowers without requiring collateral and without using group lending contracts that feature joint liability.     

Social collateral,dynamic incentives,and joint liability in a two‐step trust game: Lending to the unbankable

Asymmetric information and lack of collateral creates a suboptimal allocation of financial resources to those in most need. When uncollateralised borrowers approach financial institutions, the presence of moral hazard and adverse selection results in no lending. Conversely, group‐lending contracts—joint liability, dynamic lending, and social cost for defaulting—control for information asymmetries and create a co‐operative trust game between borrowers leading to an undominated optimal strategy to repay, and therefore, for the lender to Give. Group lending proves superior to typical individual borrowing and lending when no collateral is available. Social collateral and trust are fundamental pieces of the successful work of MicroFinance. Resulting contracts and correspondent payoffs are Pareto efficient.     

The desire for land: Strategic lending with adverse selection

This paper deals with a setting in which borrowers and lenders place different values on an asset that can be used as collateral. Under adverse selection, lenders may rationally choose credit contracts with the object of attracting a relatively risky group of clients, so raising their chances of gaining possession of the asset through default. Contracts of differing attractiveness to borrowers can also coexist in equilibrium. When an ‘inside’ and an ‘outside’ lender compete, the latter placing a lower value on the collateral, and their loanable funds are sufficiently limited, a separating equilibrium may exist in which the insider offers a contract which attracts risky borrowers, whereas the outsider's contract is aimed at a safer group. If loanable funds are ample, the only equilibrium will involve pooling contracts, but the insider may still offer more attractive contracts in an entry game.     

Adverse selection as an explanation of credit rationing and different lender types

An adverse selection model is utilized to demonstrate that informational asymmetry may make it wealth optimal for the financial intermediary (FI) to credit ration and to rationalize the existence of different lenders in the credit market. The crucial assumption is that borrowers differ in their tolerance for a lender-imposed default penalty, the severity of which also varies with the lender. The credit rationing portion proves that the FI will: 1) be forced by a binding regulatory constraint to overinvest in capital; 2) ration its worst risk class borrowers; 3) establish its optimal loan interest rate on the basis of the average quality of its loans and the interest rate elasticity of the borrower demand in its best risk category; and 4) decrease the total loan volume and increase the loan interest rate due to an increase in the capital requirement, but the effect on the default risk quality of its loan portfolio is ambiguous. The existence result is that if a lender has a high default penalty, he can charge a lower rate and attract only “good” borrowers, i.e., heterogeneous lender types encourage the screening of borrowers and vice versa.     

Credit mismatch and breakdown

This paper studies the phenomenon of mismatch in a decentralized credit market where borrowers and lenders must engage in costly search to establish credit relationships. Our dynamic general equilibrium framework integrates incentive based informational frictions with a matching process highlighted by (i) borrowers' endogenous market entry and exit decision (entry frictions) and (ii) time and resource costs necessary to locate credit opportunities (search frictions). A key feature of the incentive compatible loan contract negotiated between borrowers and lenders is the interaction of informational frictions (in the form of moral hazard) with entry and search frictions. We find that the removal of entry barriers can eliminate incentive-based equilibrium credit rationing. More generally, entry and incentive frictions are important in understanding the extent of credit rationing and credit mismatch, while search and incentive frictions are important for understanding credit market breakdown.     

Profit‐maximizing behaviour replaces social sanctions in urban microcredit marketsThe case of Italian MAGs1

Poor local information networks and weak social sanctions in urban settings make joint liability unable to guarantee high repayment rates to microlenders. Yet, microcredit programmes in Western Europe report good performance even if the majority of them require no collateral. We collected data from three Italian microcredit institutions which operate in urban areas, granting individual loans without collateral to single entrepreneurs and teams (associations and cooperatives). We found that teams repay with higher probability. On this basis we developed a microlending instrument which, like joint liability implemented in rural economies, mitigates informational problems but, unlike joint liability, fits the urban context in that it reproduces a cohesion among entrepreneurs based on profit‐maximizing behaviour and not on social capital.     

The equilibrium allocation of investment capital in the presence of adverse selection and costly state verification

Summary We consider credit rationing in an environment with adverse selection and costly state verification. The presence of costly state verification permits debt contracts to emerge under conditions that we specify. When debt contracts are observed, so is credit rationing. This rationing occurs even if it is possible for rationed borrowers to bid up expected returns to lenders and hence is voluntary. We also show how the adverse selection and costly state verification problems interact and investigate how improvements in information gathering technology impact on the extent of credit rationing.The views expressed herein are those of the authors and not necessarily those of the Federal Reserve Bank of Minneapolis or the Federal Reserve System. We have benefitted from comments on an earlier draft of this paper by Franklin Allen, Charlie Calomiris, V. V. Chari, Ed Green, Craig Holden, Jeff Lacker, George Pennachi, Neil Wallace, Anne Villamil, and an anonymous referee and from discussions with Edward Prescott.     

论产出分布对团体贷款还款率的影响

关于团体贷款的现有研究对于还款率在时间上和空间上的差异还不能够给出有说服力的解释。通过构造一个产出信息不对称下的五人还款博弈模型 ,我们从产出在成员之间的分布的角度解释这种差异。我们的模型表明了产出在成员间的分布状况可以成为导致这种差异的重要力量 ,同时也加深了我们对团体贷款还款阶段各种影响因素的理解     

Progressive Lending in Microfinance—What about the Farmers?

Dynamic incentives have become a common measure in microfinance institutions (MFI) to counteract the risk of default and to strengthen the borrower's identification with his micro‐lender. This article focuses on progressive lending over the course of the bank–borrower relationship. As the agricultural sector is increasingly important for Azerbaijan's economy, this study differentiates between the lending policies faced by farmers and non‐farmers, and matches the findings with the repayment performances of both client groups. By means of a rich data set spanning from 2007 through 2012 provided by an MFI in Azerbaijan, it can be demonstrated that farmers face a higher degree of loan volume rationing that cannot be justified by our findings on repayment performances. Moreover, we find that repeated borrowing increases the default probabilities of both client groups. In conclusion, we deduce that the MFI and borrowers could benefit from reconsidering the current lending policies.     

Information, Informal Finance, and SME Financing

Informal finance exists extensively and has been playing an important role in small- and medium-sized enterprise (SME) financing in developing economies. This paper tries to rationalize the extensiveness of informal finance. SME financing suffers more serious information asymmetry to the extent that most SMEs are more opaque and can only provide less collateral. Informal lenders have an advantage over formal financial institutions in collecting “soft information” about SME borrowers. This paper establishes a model including formal and informal lenders and high- and low-risk borrowers with or without sufficient collateral and shows that the credit market in which informal finance is eliminated will allocate funds in some inefficient way, and the efficiency of allocating credit funds can be improved once informal finance is allowed to coexist with formal finance. Translated from Economic Research Journal, 2005, 7 (in Chinese)     

Investment Decisions,Financial Flows,and Self‐Enforcing Contracts*

This article studies the role of risk sharing in dynamic credit relationships that are secured by physical collateral. It is shown that, when borrowers and lenders cannot commit not to terminate relationships (through default in the first case and liquidation in the second), overinvestment is optimal. Overinvestment facilitates risk sharing in this context: It occurs in expectation of periods in which lenders are unwilling to supply all the funds necessary to achieve complete risk sharing. Typically, overinvestment happens when investment decreases; it slows down the pace at which the capital stock is reduced and therefore results in production smoothing.     

Regulating Exclusion from Financial Markets

We study optimal enforcement in credit markets in which the only threat facing a defaulting borrower is restricted access to financial markets. We solve for the optimal level of exclusion, and link it to observed institutional arrangements. Regulation in this environment must accomplish two objectives. First, it must prevent borrowers from defaulting on one bank and transferring their resources to another bank. Second, and less obviously, it must give banks the incentive to make sizeable loans, and to honour their promises of future credit. We establish that the optimal regulation resembles observed laws governing default on debt. Moreover, if debtors have the right to a "fresh start" after bankruptcy then this must be balanced by enforceable provisions against fraudulent conveyance. Our optimal regulation is robust, in that it can be implemented in a way that does not require the regulator to have information about either the borrower or lender. Our results isolate the way in which specific institutions surrounding bankruptcy–namely rules governing asset garnishment and fraudulent conveyances–support loan markets in which borrowers have no collateral.     

A Critique of Kirzner's Finders-Keepers Defense of Profit

This paper criticizes Kirzner's use of the finders-keepers ethic to justify entrepreneurial profit. It does so by pursuing two lines of argumentation. First, Kirzner's defense of the justice of entrepreneurial profit is based upon treating the wage-for-labor-time exchange as legitimate. There are good reasons for doubting the justice of the wage-labor exchange. The paper argues that the profits earned by a capitalist firm employing wage-labor can not be considered to be just if we accept the juridical principle of imputation. The juridical principle of imputation asserts that people should be held legally responsible for the actions and results of the actions for which they are factually responsible. If we consider hired human beings always to be responsible agents, as is true in David Ellerman's (1992) rendition of the labor theory of property, Kirzner's defense of entrepreneurial profit generated in a capitalist enterprise is weakened. Second, the paper criticizes Kirzner's thesis that in a market economy everyone has, in principle, an equal opportunity to be an entrepreneur directing a productive enterprise or to be an entrepreneur engaging in speculation. Kirzner reaches this conclusion because he believes that credit markets in a free economy do not systematically discriminate amongst types of borrowers. This conclusion has been called into question by credit rationing models demonstrating that asset-poor individuals can be systematically denied access to loans. The credit rationing literature erodes the underpinnings of Kirzner's application of the finders-keepers ethic to the evaluation of entrepreneurial profit earned through speculation or productive creativity because it implies that all individuals do not in principle have an equal opportunity to be an entrepreneur.     

信息、非正规金融与中小企业融资

各种形式的非正规金融在发展中国家和地区广泛存在。本文认为,由于中小企业信息不透明,且常常不能提供充分的担保或抵押,正规金融机构难以有效克服信息不对称造成的逆向选择问题,而非正规金融则在收集关于中小企业的“软信息”方面具有优势。这种信息优势是非正规金融广泛存在的根本性原因,金融抑制只是一个强化因素,同时非正规金融市场的各种特征也都源于其存在的根本逻辑。本文构建了一个包括异质的中小企业借款者和异质的贷款者(具有不同信息结构的非正规金融和正规金融部门)的金融市场模型,证明非正规金融的存在能够改进整个信贷市场的资金配置效率。     

QUALITY AND WELFARE IN MIXED DUOPOLY: EFFECTS OF CAPACITY REDUCTION*

Under rationing of a public service due to its lower price and higher quality, the “privatization” could be regarded as a reduction in the capacity of the public service. We develop a model of mixed duopoly in which the service is vertically differentiated, a public firm is in a Stackelberg leader position, rationing happens, and the market is not covered. In one of two possible cases, it is shown that any reduction in the capacity of a public service will lower total surplus unless the price of the public service is too low and its quality is too high.