This paper questions the conventional wisdom that publication bias must result from the biased preferences of researchers. When readers only compare the number of positive and negative results of papers to make their decisions, even unbiased researchers will omit noisy null results and inflate...

Recently, there has been much discussion about replicability and credibility. By integrating the full research record, increasing statistical power, reducing bias and enhancing credibility, meta-analysis is widely regarded as 'best evidence'. Through Monte Carlo simulation, closely calibrated on...

This study reviews the evidence on the labor market impact of youth employment programs. We analyze the effectiveness of interventions, and factors that influence program performance including country context, target beneficiaries, program design, implementation, and evaluation type. We identify...