Estimating local average treatment effects in aggregate data

In some contexts, the effect of a treatment can be estimated with easily accessible aggregate rather than individual data, using difference-in-difference estimation. However, under imperfect assignment within groups, this produces intent-to-treat estimates, which may not be the treatment effect of interest. This article provides a method for estimating local average treatment effects using aggregate data. I also suggest a data source that allows the method to be applied when treatment rates are not recorded.     

Entrepreneurship and Social Capital: Examining the Association in Deprived Urban Neighbourhoods

Spatial approaches to examining entrepreneurship have increasingly built on theories of social capital. However, the nature and extent of local social capital in less successful deprived communities remains under researched and inadequately understood. This article examines the association between social capital and entrepreneurship in a deprived urban neighbourhood in the city of Leeds, UK as a means of contributing to an improved theoretical understanding of how space moderates this association. It is found that social capital has a strong association with patterns of entrepreneurship in deprived urban neighbourhoods, with the potential impacts being both positive and negative. The forms of social capital are found to differ from that found in more affluent localities, with a prevalence of bonding social capital as the key facilitator of entrepreneurship, which may help in the early stages of venture development, but which over time may become a constraint. Also, a lack of the bridging social capital associated with entrepreneurial success is found within the locality. From a policy perspective, it is recommended that policymakers responsible for entrepreneurship in deprived urban neighbourhoods should seek to enhance initiatives for developing social capital which incorporate local businesses, residents and local government agencies.     

The causal effect of the number of children on gender‐specific labour supply elasticities to the firm

We estimate the effect of the number of children on the female and the male wage elasticities of labour supply to the firm using instrumental variables estimation in data from the US Current Population Survey (2000–19). Parents' number of children is instrumented with the sex mix of their first two children. We find that the male wage elasticity of labour supply to the firm significantly increases with the number of children, while the female elasticity is not significantly altered. That is, we find evidence that male labour markets become more competitive with the arrival of children. Our results also show that firms have substantial monopsonistic power and, in line with the monopsony theory of the gender pay gap, that male labour markets are more competitive than female markets.     

Competitive screening in insurance markets with endogenous wealth heterogeneity

We examine equilibria in competitive insurance markets with adverse selection when wealth differences arise endogenously from unobservable savings or labor supply decisions. The endogeneity of wealth implies that high-risk individuals may ceteris paribus exhibit the lower marginal willingness to pay for insurance than low risks, a phenomenon that we refer to as irregular-crossing preferences. In our model, both risk and patience (or productivity) are privately observable. In contrast to the models in the existing literature, where wealth heterogeneity is exogenously assumed, equilibria in our model no longer exhibit a monotone relation between risk and coverage. Individuals who purchase larger coverage are no longer higher risks, a phenomenon frequently observed in empirical studies.     

Private equity portfolio company performance during the global recession

We assess the recent economic and financial performance of U.K. private equity (PE) backed buyouts. Our empirical evidence, which is based on thousands of transactions, reveals that PE-backed buyouts achieved superior economic and financial performance in the period before and during the recent global recession, relative to comparable firms that did not experience such transactions. Our regression results imply positive differentials of 5–15% in productivity and approximately 3–5% in profitability for buyout firms, relative to non-buyout firms. Another key finding is that revenue and employment growth for PE- backed firms were positive during the sample period.     

Buyer-supplier relations in the UK - automotive industry: Strategic implications of the Japanese manufacturing model

This paper documents the adoption of the Japanese model of manufacturing in the U.K. motor industry. Internal developments by the vehicle assemblers and their suppliers are examined. It is argued that the Japanese model involves very high intra- and interorganizational dependencies. Although this does not cause problems in Japan due to the structure of the Japanese motor industry, the structure of the UK vehicle industry presents severe obstacles to the successful use of Japanese methods. Pursuit of the pure Japanese model within the existing industry structure appears to be fraught with problems. Moreover, such an exercise risks sweeping away potential strengths of the existing structure.