[論文] Attention span during lectures: 8 seconds, 10 minutes, or more?

授業では、1トピック10-15分程度がいい？

 Bradbury, N. A. (2016). Attention span during lectures: 8 seconds, 10 minutes, or more?.

https://journals.physiology.org/doi/full/10.1152/advan.00109.2016

以下、Abstractの抜粋です．

In the current climate of curriculum reform, the traditional lecture has come under fire for its perceived lack of effectiveness. Indeed, several institutions have reduced their lectures to 15 min in length based upon the “common knowledge” and “consensus” that there is a decline in students’ attention 10–15 min into lectures. A review of the literature on this topic reveals many discussions referring to prior studies but scant few primary investigations. Alarmingly, the most often cited source for a rapid decline in student attention during a lecture barely discusses student attention at all. Of the studies that do attempt to measure attention, many suffer from methodological flaws and subjectivity in data collection. Thus, the available primary data do not support the concept of a 10- to 15-min attention limit. Interestingly, the most consistent finding from a literature review is that the greatest variability in student attention arises from differences between teachers and not from the teaching format itself. Certainly, even the most interesting material can be presented in a dull and dry fashion, and it is the job of the instructor to enhance their teaching skills to provide not only rich content but also a satisfying lecture experience for the students.