Showing 1 - 10 of 13
To estimate causal effects from observational data, an applied researcher must impose beliefs. The instrumental variables exclusion restriction, for example, represents the belief that the instrument has no direct effect on the outcome of interest. Yet beliefs about instrument validity do not...
Persistent link: https://www.econbiz.de/10012456059
We examine the generalizability of internally valid estimates of causal effects in a fixed population over time when that population is subject to aggregate shocks. This temporal external validity is shown to depend upon the distribution of the aggregate shocks and the interaction between these...
Persistent link: https://www.econbiz.de/10012456228
A modern, decision-theoretic framework can help clarify important practical questions of experimental design. Building on our recent work, this chapter begins by summarizing our framework for understanding the goals of experimenters, and applying this to re-randomization. We then use this...
Persistent link: https://www.econbiz.de/10012456508
Teacher value-added (VA) measures how teachers improve their students' contemporaneous test scores. Many teachers, however, argue that contemporaneous test scores are a poor proxy for their permanent influence on students. This paper considers a new VA measure -- 'long-run VA' -- that captures...
Persistent link: https://www.econbiz.de/10012794583
We study the impact on the skill premium of increases in the quality of goods consumed by households ("trading up …"). Our empirical work shows that high- quality goods are more intensive in skilled labor than low-quality goods and that … household spending on high-quality goods rises with income. We propose a model consistent with these facts. This model accounts …
Persistent link: https://www.econbiz.de/10012479881
the market for quality. However, inadequate risk adjustment of report-card measures often biases comparisons across …
Persistent link: https://www.econbiz.de/10012479890
large effects on the quality of care that patients receive, and that all of these effects persist for several years. Our … results suggest that switching to higher-quality PCPs could significantly affect patients' longer-run health outcomes …
Persistent link: https://www.econbiz.de/10012480213
outcomes, proximity, and even peer quality. Parents also value schools that reduce crime and increase formal labor market …
Persistent link: https://www.econbiz.de/10012480993
on unobserved teacher quality (as in the standard empirical Bayes approach), our nonparametric estimator permits the …
Persistent link: https://www.econbiz.de/10012481678
purchase used assets which are less durable than new assets and adopt less durable, low quality assets, that are otherwise … fraction in less durable, low quality assets. There is a critical distinction between the pledgeability and durability of …
Persistent link: https://www.econbiz.de/10012271598