Collier and Gunning review approximately forty factors that have been offered as possible explanations for poor growth in sub-Saharan Africa. The authors conclude that “domestic policies largely unrelated to trade†may be the major factors holding back growth now. This comment,...

In 2010 the College Board and Educational Testing Service (ETS®) administered 134,747 Advanced Placement (AP®) microeconomics and macroeconomics exams to high school students. The exams are designed to represent the introductory-level micro and macro courses taught in college, and students can...