Should you highlight and reread when studying?

Highlighting, underlining, rereading as study methods.

Axis: useful once you already know most of it … suboptimal, avoid

Answers by date: 5 records in 5 sources, newest first; the answers above are the current ones. The advice was refined (2018), never reversed, in these records.

date	who	answer	source
2018-04-18	Ali	In the past Ali would have read the textbook and made notes, spending eight to ten hours on the same topics and, he thinks, learning less, because notes and textbooks are so inefficient.	Study With Me + 10 Productivity / Revision Tips - Cambridge University medical student VLOG #31 00:07:23
2018-04-10	Ali	Ali says writing questions for yourself instead of notes works because active recall is by far the most efficient study technique, while simply rereading notes is a total waste of time.	Study with me + My revision method - Cambridge University medical student VLOG #30 00:03:24
2018-04-09	Ali	Ali says only recalling a topic earns a date in his spreadsheet: just rereading the textbook chapter or your notes is a total waste of time.	How to Study for Exams - Spaced Repetition · Evidence-based revision tips 00:15:54
2018-04-04	Ali	Ali says rereading notes or textbooks improves retention somewhat but, compared with other techniques, is pretty much a waste of time.	How to study for exams - Evidence-based revision tips 00:02:29
2018-03-24	Ali	Ali sees rereading as the biggest problem among his school friends, who took three hours over a science topic because they only reread; the secret, he says, is making questions for yourself and testing yourself.	Exam Revision Tips with Ibz Mo 00:13:51