For policy purposes, it is important to understand the relative efficacy of various methods to target the poor. Recently, participatory methods have received particular attention. We ex-amine the effectiveness of a hybrid two-step process that combines a participatory wealth ranking and a...

Accurate measurement of stock levels, turnover, and profitability in microenterprises in developing countries is difficult due to the fact that the majority of these firms do not keep detailed records. We test the use of RFID tags as a means of objectively measuring stock levels and stock flow...

We study the design of randomized controlled experiments in environments where outcomes are significantly affected by unobserved effort decisions taken by the subjects (agents). While standard randomized controlled trials (RCTs) are internally consistent, the unobservability of effort provision...

We study the recent evolution of top incomes in Switzerland, analyzing both social security data on labor incomes and tax data on total income. The results show that in the last 20 years, the share of top incomes has risen, and the top 0.01 percent’s share even doubled, putting Switzerland...

This paper investigates the determinants of group membership, and in particular the effect of income inequality on individual incentives to join economic groups. Drawing on a simple model, we show that an increase in inequality has an ambiguous effect and that the type of access rule (open...

We (a) propose an implementable innovation index, (b) relate it to existing innovation definitions and (c) show whole-economy and industry-specific results for the UK market sector, 2000-2005. Our innovation measure starts by observing that we could get more GDP without innovation by simply...

Two distinctive regimes are distinguished in Spain over half-a-millennium. A first one (1270s-1590s) corresponds to a high land-labour ratio frontier economy, pastoral, trade-oriented, and led by towns. Wages and food consumption were relatively high. Sustained per capita growth occurred from...

This paper provides three perspectives on long-run growth rates of labor productivity (LP) and of multi-factor productivity (MFP) for the U. S. economy. It extracts statistical growth trends for labor productivity from quarterly data for the total economy going back to 1952, provides new...

Using synthetic data generated by a prototypical stochastic growth model, we explore the quantitative extent of measurement error of the Solow residual (Solow 1957) as a measure of total factor productivity (TFP) growth when the capital stock is measured with error and when capacity utilization...

Building on the Stiglitz report, a growing literature suggests to explore other aspects of human welfare apart from material well-being, such as job security, crime, health, environmental factors and subjective perceptions. To explore the additional information of these indicators, we analyze...