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Using 6 longitudinal data sets, the authors estimate links between three key elements of school readiness--school-entry academic, attention, and socioemotional skills--and later school reading and math achievement. In an effort to isolate the effects of these school-entry skills, the authors ensured that most of their regression models control for(More)
This paper takes advantage of a unique policy change to examine how principals make decisions regarding teacher dismissal. In 2004, the Chicago Public Schools (CPS) and Chicago Teachers Union (CTU) signed a new collective bargaining agreement that gave principals the flexibility to dismiss probationary teachers for any reason and without the documentation(More)
Identifying the types of mathematics content knowledge that are most predictive of students' long-term learning is essential for improving both theories of mathematical development and mathematics education. To identify these types of knowledge, we examined long-term predictors of high school students' knowledge of algebra and overall mathematics(More)
Replications and robustness checks are key elements of the scientific method and a staple in many disciplines. However, leading journals in developmental psychology rarely include explicit replications of prior research conducted by different investigators, and few require authors to establish in their articles or online appendices that their key results(More)
Photonic signal processing requires efficient on-chip light sources with higher modulation bandwidths. Today's conventional fastest semiconductor diode lasers exhibit modulation speeds only on the order of a few tens of GHz due to gain compression effects and parasitic electrical capacitances. Here we theoretically show an electrically-driven carbon(More)
Madison and UC Davis for helpful comments and suggestions. Any errors are my own. ABSTRACT This paper studies the effect of employment protection on worker productivity and firm output in the context of a public school system. In 2004, the Chicago Public Schools (CPS) and Chicago Teachers Union (CTU) signed a new collective bargaining agreement that gave(More)
Madison and UC Davis for helpful comments and suggestions. Any errors are my own. The views expressed herein are those of the author and do not necessarily reflect the views of the National Bureau of Economic Research. ABSTRACT This paper studies the effect of employment protection on worker productivity and firm output in the context of a public school(More)
participants at the University of Michigan for helpful comments and suggestions. Any errors are my own. The views expressed herein are those of the author and do not necessarily reflect the views of the National Bureau of Economic Research. ABSTRACT This paper takes advantage of a unique policy change to examine how principals make decisions regarding(More)
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