We extend the existing literature on gender differences in competitive behavior by investigating tournament entry choices when a principal decides for an agent. In laboratory experiment, we randomly assign subjects role of either or The whether agent performs real-effort task under piece-rate incentives. When deciding, is informed about agent’s previous performance, age, and residency. Between ...

The well-developed genetics of Drosophila make it an excellent system to understand mechanisms of cytoskeletal function and organization and how the cytoskeleton is coupled to development and differentiation. Many years of work have revealed that Drosophila has a set of cytoskeletal structural proteins and protein motors qualitatively similar to most other eukaryotes. The full toolbox of cytosk...

A body of literature suggests that ethnic heterogeneity limits economic growth. This paper provides microeconometric evidence on the direct effect of ethnic divisions on productivity. In team production at a plant in Kenya, an upstream worker supplies and distributes flowers to two downstream workers who assemble them into bunches. The plant uses an essentially random rotation process to assign...

PO Box 6395, Lawrenceville, NJ 08648-0395, USA, and School of Molecular and Microbial Biosciences, University of Sydney, NSW 2006, Australia The cover of this issue of Acta Crystallographica Section F is the third one to display a photomontage of crystal micrographs. Section F has committed its cover illustration for the January issue each year to a highlight of its crystallization content with...

A vast amount of information is collected on the subsequent health and development of babies who are born early or small, as well as about babies who are ill around the time of birth, or who have had a particular treatment or intervention. This information is collected for diVerent reasons and in several diVerent ways. Some data are collected as part of prospectively planned follow up studies, ...