Blog · 2 October 2026
How to help a child who "studies but forgets"
Re-reading feels like learning but fades fast. Four research-backed methods, from active recall to spacing, and how to use them at home.
"She sat with the book for two hours and remembers nothing the next day." Many parents describe it in almost these words. It is rarely about effort. It is usually about method.
Re-reading and highlighting feel productive because the page becomes familiar. But recognising a page is not the same as being able to recall it on your own, and an exam asks for the second.
In a well-known study, Henry Roediger and Jeffrey Karpicke asked university students to study short prose passages. Some re-read them; others practised recalling them. Five minutes later, the re-readers did better. Two days and a week later, the students who had practised recalling remembered substantially more, even though re-reading had made the other group feel more confident.
A large 2013 review by John Dunlosky and colleagues rated ten common study techniques. Practice testing and spreading study out over time were rated high utility. Re-reading and highlighting were rated low: in the authors' words, they 'do not consistently boost students' performance'.
This does not mean reading is useless. A first careful reading is how a child meets the material. The trouble is the second, third and fourth reading, which feel like work but add little.
A word on limits: much of this research was done with older students and short texts, and it describes techniques, not any product. The findings have held up across many studies, which is why they are worth trying at home. Here are four methods, with what the research found for each.
1. Active recall: close the book and remember
After reading a section, your child closes the book and writes or says what they remember. Then they open it and check. The gaps they find are exactly what to study next.
At the table, it can be as simple as: 'Close the book. Tell me three things from that page.' Students call this active recall; researchers call it retrieval practice. It feels harder than re-reading, and that effort is part of why it works.
2. Spaced repetition: a little, again, later
Two hours on one topic the night before is less effective than the same time split across several days. A review by Cepeda and colleagues brought together 317 experiments on this 'spacing effect'. It found that the best gap between study sessions grows with how long the learning has to last.
In practice: revisit a chapter a day after learning it, then a few days later, then a week or two later, using recall each time rather than re-reading. A note in the notebook margin with the next review date is enough.
3. Ask before teaching: the pretesting effect
Trying a question before learning a topic, even getting it wrong, can make the lesson that follows stick better. Lindsey Richland and her colleagues gave students questions about an essay on vision before they read it. On the final test, the pretested students did better, and the benefit held even for the questions they had got wrong at first.
At home: before your child opens a new chapter, ask one or two questions from it. 'Why do you think leaves are green?' A wrong guess is not wasted; it prepares the mind for the right answer.
4. Explain why: self-explanation
Michelene Chi and her colleagues first noticed this in 1989. Watching university students study worked physics examples, they saw that the stronger students explained each step to themselves far more than the weaker ones did. That study showed a link, not a cause.
In 1994, Chi and a new team tested it. Eighth-grade students who were prompted to explain to themselves while reading a text about the human circulatory system understood it better than students who read the same text twice. The Dunlosky review rates self-explanation as moderate utility: promising, but less tested in real classrooms than recall and spacing.
A parent does not need to know the subject to use this. Ask 'Why?' and 'How do you know?', then listen.
A 20-minute routine for the evening
Five minutes: recall yesterday's topic without the book, then check. Ten minutes: today's new section, read once carefully, then closed-book recall. Five minutes: your child explains one idea to you, and you ask 'why' once. Mark the topic for another review in a few days.
Short, regular sessions like this tend to do more than long sessions of re-reading. And when a child can recall and explain a topic a week later, the marks usually follow.
When it is not about study method
If your child forgets far more than classmates across all subjects, struggles to read or follow instructions, or seems unusually tired or anxious, a change of study method will not be enough. Talk to the class teacher and, if needed, your paediatrician. Sleep, worry and learning difficulties all affect memory, and they deserve proper attention.
Sources
- Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning. Psychological Science, 17(3), 249–255
- Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students' learning with effective learning techniques. Psychological Science in the Public Interest, 14(1), 4–58
- Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks. Psychological Bulletin, 132(3), 354–380
- Richland, L. E., Kornell, N., & Kao, L. S. (2009). The pretesting effect. Journal of Experimental Psychology: Applied, 15(3), 243–257
- Chi, M. T. H., Bassok, M., Lewis, M. W., Reimann, P., & Glaser, R. (1989). Self-explanations. Cognitive Science, 13(2), 145–182
- Chi, M. T. H., de Leeuw, N., Chiu, M.-H., & LaVancher, C. (1994). Eliciting self-explanations improves understanding. Cognitive Science, 18(3), 439–477
See how deeply your child understands.