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Want to understand something complicated? Just try explaining it to yourself

It's like your very own 1 on 1 tutoring session.

Mihai AndreibyMihai Andrei
December 21, 2018
in News, Science
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A new study found that self-explanation is a great learning technique. Researchers say that using this method, learners can “generate inferences about causal connections and conceptual relationships that enhance understanding”.

Researchers led by Kiran Bisra from the Simon Fraser University carried out a meta-analysis of 64 prior studies involving nearly 6,000 participants. The studies compared various forms of self-explanation with other study techniques such as taking notes or summarising.

They found that self-explanation was more effective than instructor explanation (where the explanation is given by a teacher based on learning materials). Of course, instructor explanation was also better than no explanation at all.

The researchers also checked to see whether the benefits of self-explanation are owed to simply spending more time (or effort) studying this way — but conclude that this is not the case. However, controlling for this type of external influence remains challenging and it’s difficult to rule out any role that it might have.

Across different studies, there were 20 variables to consider, including type of learning task (e.g., solving problems, studying worked problems, and studying text), subject area, level of education, type of inducement, and treatment duration. Researchers also note a limitation associated with a reliance on instructor-scripted prompts, recommending that future studies use computer-generation of self-explanation prompts instead.

However, even considering all these limitations, results were quite robust — though not entirely straightforward.

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For instance, the ideal ratio between taught guidance and self-explanation may be influenced by the learner’s own proficiency skill — the more skilled students are at a particular topic, the better they are at self-explaining. Meanwhile, in an area that’s relatively unknown to them, they are much more reliant on external explanations.

Still, Bisra and her colleagues say that their study proves the benefits of self-explanation in most contexts. They add that a “major implication” of their findings was that “…beneficial effects of inducing self-explanation seem to be available for most subject areas studied in school, and for both conceptual (declarative) and procedural knowledge.”

[panel style=”panel-default” title=”Types of knowledge” footer=””]Conceptual and procedural knowledge cannot always be separated. The first one indicates an understanding of abstract or generic ideas, whereas the latter is essentially a series of steps, or actions, done to accomplish a goal. In a sense, conceptual knowledge is knowing what to do, and procedural knowledge is knowing how to do it, step by step.[/panel]

This isn’t the first time this idea emerged. Previous research had established that effective learners are more likely to self-explain challenging concepts, but no correlation had been established. Overall, results are intriguing (and potentially useful) for both students and teachers alike.

The study has been published in Educational Psychology Review.

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Mihai Andrei

Mihai Andrei

Dr. Andrei Mihai is a geophysicist and founder of ZME Science. He has a Ph.D. in geophysics and archaeology and has completed courses from prestigious universities (with programs ranging from climate and astronomy to chemistry and geology). He is passionate about making research more accessible to everyone and communicating news and features to a broad audience.

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