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作者：Heckman, JJ; Smith, J; Clements, N
作者单位：Western University (University of Western Ontario)
摘要：The conventional approach to social programme evaluation focuses on estimating mean impacts of programmes. Yet many interesting questions regarding the political economy of programmes, the distribution of programme benefits and the option values conferred on programme participants require knowledge of the distribution of impacts, or features of it. This paper presents evidence that heterogeneity in response to programmes is empirically important and that classical probability inequalities are ...
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作者：Heckman, JJ; Ichimura, H; Todd, PE
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; University of Pennsylvania
摘要：This paper considers whether it is possible to devise a nonexperimental procedure for evaluating a prototypical job training programme. Using rich nonexperimental data, we examine the performance of a two-stage evaluation methodology that (a) estimates the probability that a person participates in a programme and (b) uses the estimated probability in extensions of the classical method of matching. We decompose the conventional measure of programme evaluation bias into several components and fi...
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作者：Agastya, M
摘要：We study the dual issues of allocation and coalition formation in a model of social learning. For a class of economies which can be expressed in terms of a real valued characteristic function, we first show that all self-perpetuating allocations realized from a simple bargaining game must be core allocations although players make simultaneous demands for surplus and only on their own behalf. Following this, we provide a sufficient condition under which the society eventually learns to divide t...
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作者：Schmidt, KM
摘要：The paper shows that an increase in competition has two effects on managerial incentives: It increases the probability of liquidation, which has a positive effect on managerial effort, but it also reduces the firm's profits, which may make it less attractive to induce high effort. Thus, the total effect is ambiguous. I identify natural circumstances where increasing competition unambiguously reduces managerial slack. In general, however, this relation need not be monotonic. A simple example de...
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作者：Stein, JC
作者单位：National Bureau of Economic Research
摘要：This paper develops a model of repeated innovation with knowledge spillovers. The model's novel feature is that firms compete on two dimensions: (1) product quality, where one firm's innovation ultimately spills over to other firms; and (2) distribution costs, where there are no spillovers across firms and where learning-by-doing on the part of incumbent firms gives them a competitive advantage over would-be entrants. Such firm-specific learning-by-doing has two important consequences: (1) it ...
