摘要:The papers in this issue address the impact of incentives and teaching on students’ understanding. To what extent should economics educators expect incentives and/or teaching methods to improve students’ understanding? Extrinsic or intrinsic incentives may affect students’ effort and also the way they approach learning. Teaching methods may affect the fruitfulness of students’ efforts.Chen and Lin investigate students’ use of online lectures as supplements – and to some degree – as substitutes for attending classes. Given evidence of the association between class attendance and grades, the relationships between class attendance, viewing online lectures and grades are of considerable interest. The associations found in their data are consistent with a positive effect of use of online lectures. As Chen and Lin conclude, this provides grounds for further studies which examine whether there is a causal effect.