A meta-analysis explains the variation in estimated trade effects of technical barriers to trade broadly defined, using available estimates from the empirical international trade literature, and accounting for data sampling and methodology differences. Agriculture and food industries tend to be...

The voluminous empirical research on horizontal productivity spillovers from foreign investors to domestic firms has yielded mixed results. In this paper we collect 1,205 estimates of spillovers and examine which factors influence spillover magnitude. Our results suggest that horizontal...

The Haynesville shale in Louisiana is one of several unconventional gas plays that have been discovered in the U.S. in the past decade and promise to dramatically change the course of future energy development given its enormous resource potential. Unconventional gas resources are abundant, but...

The severity and prevalence of turnover among child welfare workers have resulted in increased attention and research—particularly in the past decade. While the literature, in its current state, has improved our broad knowledge of the phenomenon, our understanding is still based on—and...

Until the early 90’s a strong consensus existed among economists that minimum wage has negative employment effects. However, in 1992, the studies by Card (1992a) and Katz and Krueger (1992), who found insignificant and slightly positive effects, respectively, came to create a schism. Since...

The purpose of this note is to introduce the technique and main findings of meta-analysis to the reader, who is unfamiliar with the field and has the usual objections. A meta-analysis is a quantitative survey of a literature reporting estimates of the same parameter. The funnel showing the...

Background In the last decade, network meta-analysis of randomized controlled trials has been introduced as an extension of pairwise meta-analysis. The advantage of network meta-analysis over standard pairwise meta-analysis is that it facilitates indirect comparisons of multiple interventions...

Background: Methods for systematic reviews of the effects of health interventions have focused mainly on addressing the question of 'What works?' or 'Is this intervention effective in achieving one or more specific outcomes?' Addressing the question 'Is it worth it given the resources...

The marginal propensity to spend on food out of food stamps (MPSFS) is a key indicator of the fungibility of food stamp income. This fungibility has important implications for food stamp policy. Studies estimating the MPSFS use very different methods and come to very different conclusions...