Interleaving Topics: The Study Method Top Students Swear By

When you’re studying hard for an exam, it’s important to ensure that you are revising as efficiently and effectively as possible, so here’s an approach you might want to try.

This article is correct as at 14 April 2026.

The interleaving study method involves mixing different topics within the same subject in one revision session, rather than focusing on a single topic over an extended period. The idea is that you boost long-term information retention by switching from one concept to another, thereby strengthening your understanding.

This technique also forces the brain to pinpoint the right strategy to use for various different problems – cognitive psychologists claim the mind learns to differentiate between alternating concepts, and in so doing boosts memory. Interleaving is the opposite of what is known as ‘blocked’ learning, in which you study one topic at length and in full before moving on. With interleaving, you’re effectively arranging topics in alternate layers, and it’s a methodology which you can apply across myriad disciplines including business and economics.

And while it can, initially, feel trickier than standard study methods, many students find interleaving effective and efficient for long-term learning. One study, for example, found that students who interleaved their topics performed almost twice as well as those who stuck to traditional blocking. Encouragingly, the existing research into interleaving’s effectiveness has so far shown promising results.

The Key Benefits of Interleaving Topics

• Enhanced retention: Interleaving can lead to improved retention of information and strengthened memory associations. If, in contrast, you cram a single topic for an extended period, you may think you have grasped it fully when you actually haven’t.
• Active recall: Because you force the brain to shift contexts, the learning process becomes challenging and active, enhancing cognitive engagement.
• Connection: At the same time, this method also helps you to appreciate how different – yet related – concepts connect with each other. This identification of overlaps in your learning can be especially helpful if you’re studying topics with similar themes. You’ll recognise patterns in seemingly diverse situations.
• Spacing: When you interleave topics for revision, you put one topic to one side for a while before returning to it. So you include spacing within your learning, despite it being a separate study technique. Spacing is about resting between learning sessions to replenish cognitive effort; interleaving is about contrasting topics. The benefit is that when you revisit the material, you almost need to relearn it, thus cementing the topic in your long-term memory.
• Mirroring real-world situations: Let’s face it, life doesn’t present problems in neat, orderly blocks divided by themes. Instead, you have to choose the right solution from all areas of knowledge available to you.

 Common Myths Around Interleaving

As mentioned above, interleaving is not the same as spacing – that’s a common misconception. Here are a few other myths:

Myth #1 – Interleaving is a quick win

Many students feel the benefits of this technique over time, not overnight. So you need to appreciate that it’s a long-term strategy.

Myth #2 – The more interleaving you do, the better the results

People sometimes have a notion that the more interleaving they do, the better the outcome. In reality, if you interleave too many topics, you may struggle to grasp them all fully then struggle when it comes to moving on to more advanced topics.

As yet, there seems to be no generally agreed best number of topics to interleave. However, one piece of research which looked at different types of badminton serve found that interleaving three different kinds of serve was more effective than practicing one before the second then the third.

Myth #3 – You can interleave subjects as well as topics

Interleaving is about combining topics, rather than subjects. This allows you to forge connections within each one and to select the most effective strategy for solving every individual problem. This should mean you ultimately understand the material better and will stand a better chance of remembering the relevant information.

Tips for Using Interleaving

• Use the method to revise topics you’ve studied previously as well as fresh content. This strengthens memory still further and allows for the forging of connections between different knowledge areas.
• Tailor your approach to your individual learning goals and how you work best. For instance, you might decide to mix topics within one study session or switch topics from one day to the next. There are no set rules, so just experiment and learn what works best for you.
• Use study aids such as quizzes, revision cards, online learning platforms and past papers in interleaving. Many of these tools let you swap topics or questions around, making this perfectly possible.
• Monitor your progress. Track your progress and adjust your practice as necessary. If some topics need more attention than others, tweak your study plans accordingly.
• Choose your interleaving pattern. With this method, you choose your own pattern of study. For example, if you have three topics (A, B and C), you can interleave them at random (ACBAABAC) or systematically (ABCABCABCABC). Or you can follow an AABBCC regime, meaning you spend a short while on each one before moving on to the next. Finally, you can spend even longer on each topic, following an AAABBBCCC pattern.
• Review and adjust. After looking at each topic once, review them all one more time at the end of your revision session. But, whatever approach you take, don’t switch topics too often, otherwise you may not take information in properly. Don’t rush through material without fully grasping it or switch too abruptly to a wildly unrelated area. Equally, if you feel you’re making satisfactory progress when the time you’ve allocated for a particular subject is up, be flexible in carrying on for a short while before returning to your schedule later. Trust your instincts so you use your study time as effectively as possible.

Interleaving is backed by a growing body of research and could make a significant difference to your revision practice. It’s certainly worth trying it to see if this different approach works for you.