This paper studies a collective decision problem in which a group of individuals with interdependent preferences vote whether or not to implement a public project of unknown value. A utilitarian social planner aggregates these votes according to a majority rule; but, unlike what is commonly assumed in the literature, the planner is unable to commit to the rule before votes are cast. Characteriz...

This paper studies a collective decision problem in which a group of individuals with interdependent preferences vote whether or not to implement a project of unknown value. A utilitarian social planner aggregates these votes according to a majority rule; but, unlike what is commonly assumed in the literature, the planner is unable to commit to the rule before votes are cast. Characterizing the...

One of the main tasks of vision is to individuate and recognize specific objects. Unlike the detection of basic features, object individuation is strictly limited in capacity. Previous studies of capacity, in terms of subitizing ranges or visual working memory, have emphasized spatial limits in the number of objects that can be apprehended simultaneously. Here, we present psychophysical and ele...

Molecular motor proteins use the energy released from ATP hydrolysis to generate force and haul cargoes along cytoskeletal filaments. Thus, measuring the force motors generate amounts to directly probing their function. We report on optical trapping methodology capable of making precise in vivo stall-force measurements of individual cargoes hauled by molecular motors in their native environment...

U nder pressure to improve s t ud e nt a c h ie ve me nt , schools throughout the nation have, over the past 20 years, turned to comprehensive school reform (CSR). CSR is based on the idea that a school should have a coherent educational strategy that addresses all aspects of its operations and aligns them in a well-functioning delivery system. Hundreds of CSR models have been developed. More t...

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The fixed income (FI) market is a financial market where debt securities are traded commonly in the form of bonds. Unlike equity securities which are traded on exchanges, the debt securities are primarily traded in over-the-counter (OTC) markets. While the use of electronic trading systems in the fixed income market is growing, the majority of the FI market is still driven by broker-dealer rela...