We all love good news. This simple fact of life explains a well known syndrome known as publication bias: studies with positive results are more likely to be published than those with negative results. But the syndrome goes beyond academic publications.
In education as well as in other areas of public policy, the pressure to show results (and to justify budgets) creates strong incentives to report on positive stories over and above those showing a lack of results. It is, indeed, easier and more pleasant to write about what works than about what doesn’t work.
A few months ago we launched a new note series, "Evidence to Policy," (or E2P for short) to present in non-technical language results from impact evaluation studies the World Bank has conducted of human development programs. From the start, I wanted to ensure that E2P remains a vehicle for evidence-based development policy and not a vehicle for intellectual bragging and biased reporting.