Stuart J, Rutherford R J
Lancet. 1978 Sep 2;2(8088):514-6. doi: 10.1016/s0140-6736(78)92233-x.
A simple procedure, based on a questionnaire, was used for the assessment of student concentration during lectures. Analysis of 1353 questionnaires from 12 lectures showed that student concentration rose sharply to reach a maximum in 10-15 min, and fell steadily thereafter. The data suggest that the optimum length of a lecture may be 30 instead of 60 min. This method by which student feedback is obtained may also be used to improve lecturing performance.
一种基于问卷调查的简单程序被用于评估学生在讲座期间的注意力集中度。对来自12场讲座的1353份问卷的分析表明，学生的注意力集中度在10 - 15分钟内急剧上升至最高值，此后稳步下降。数据表明，讲座的最佳时长可能是30分钟而非60分钟。这种获取学生反馈的方法也可用于提高授课表现。
