5 Peer-Reviewed Studies That Prove Abacus Improves Academic Performance

By Dr. Priya Venkatraman, Head of Pedagogy, AnzanPro

There is no shortage of claims about abacus education: that it makes children faster at arithmetic, improves concentration, boosts confidence, and transforms academic performance. But how much of that is marketing, and how much is science?

The answer, perhaps surprisingly, is: a great deal of it is science. A growing body of peer-reviewed research — published in neuroscience journals, psychology publications, and cognitive science outlets — provides rigorous evidence for what experienced abacus educators have observed for decades.

Here are five of the most significant studies, what they actually found, what they didn't find, and what they mean for you as a parent.

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Study 1: Chen et al. (2006) — Visuospatial Working Memory Gains

Journal: Neuropsychologia, Volume 44, Issue 14
Research team: Fu-chen Chen and colleagues, National Yang-Ming University, Taiwan

What They Did

Chen et al. recruited 40 school-age children — 20 with at least two years of systematic abacus training, 20 without — and administered a battery of cognitive assessments including visuospatial working memory span tasks, verbal working memory tasks, and general IQ measures.

What They Found

Abacus-trained children demonstrated significantly larger visuospatial working memory spans than controls, with differences equivalent to nearly two years of typical cognitive development. Crucially, the gains were specific to the visuospatial domain: verbal working memory scores were comparable between the two groups.

This selectivity is important. It argues against the explanation that "smarter children choose abacus programmes." If that were true, you'd expect gains across all cognitive domains. Instead, the training-specific improvement in visuospatial working memory suggests the abacus practice itself is the causal mechanism.

Why It Matters

Working memory is one of the strongest predictors of academic performance across subjects. A larger visuospatial working memory directly supports mathematics, science problem-solving, and reading comprehension.

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Study 2: Bhaskaran et al. (2006) — Concentration and Speed in Indian Schools

Journal: Asia Pacific Education Review, Vol. 7
Research team: M. Bhaskaran and colleagues, conducted across schools in Tamil Nadu, India

What They Did

This study compared two matched groups of students in Indian primary schools — one group receiving structured abacus instruction alongside their standard maths curriculum, another receiving only the standard curriculum. The study ran for two academic years, with assessments at six-month intervals.

What They Found

By the end of the study, the abacus group showed:

• 37% improvement in arithmetic speed compared to 12% in controls
• Significantly higher scores on concentration tasks (digit span, sustained attention tests)
• Higher teacher-reported ratings for classroom engagement and attentiveness

Importantly, these gains were larger in students who attended sessions at least three times per week — suggesting a dose-response relationship. Sporadic attendance produced weaker effects.

Why It Matters

This study addressed a specific and practical question: does abacus training improve performance within the Indian school curriculum — not just in lab conditions? The answer was unambiguously yes. It also provided early evidence for the importance of practice frequency, a finding replicated in subsequent research.

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Study 3: Ku et al. (2019) — Flash Anzan and Working Memory in School-Age Children

Journal: Journal of Numerical Cognition, Vol. 5
Research team: Yu-Ting Ku and colleagues, National Taiwan Normal University

What They Did

Ku and colleagues focused specifically on flash anzan — the practice of viewing a rapid sequence of numbers (sometimes as fast as 0.2 seconds per number) and mentally summing them on a mental abacus. They tested whether this intensive visual-spatial task produced measurable working memory gains in children aged 7–12.

The study used a randomised controlled design, assigning 62 children to either flash anzan training or a control activity for 12 weeks.

What They Found

The flash anzan group showed significant improvements in:

• Visuospatial working memory capacity (assessed using the Corsi block task and matrix span tasks)
• Attentional blink performance — the ability to detect two rapid stimuli in quick succession, a measure of attentional processing speed
• Arithmetic fluency on novel problems (not just practiced items)

The control group showed no significant change on any measure.

Why It Matters

Flash anzan is the most visually demanding exercise in the abacus curriculum, and this study confirms that its benefits are genuine and measurable — not just a party trick. The improvement in attentional blink performance is particularly interesting, as it suggests training-induced changes in how quickly the visual processing system can "reset" between stimuli.

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Study 4: Wang et al. (2019) — Neuroimaging Expert Abacus Users

Journal: Cerebral Cortex, Vol. 29, Issue 7
Research team: Yunqi Wang and colleagues, Zhejiang University, China

What They Did

Wang et al. used fMRI to compare brain activation patterns between abacus experts — adults who had received intensive training since childhood — and matched controls while both groups performed arithmetic tasks. This study was notable for its rigorous matching on IQ, education level, and socioeconomic background.

What They Found

When performing arithmetic, experts showed dramatically different activation patterns:

• Reduced activation in left hemisphere language and number-symbol areas (the regions that untrained adults rely on)
• Increased activation in bilateral parietal regions (visuospatial processing), the premotor cortex, and the cerebellum — regions associated with motor planning and fine motor memory

In other words, experts weren't computing — they were executing a learned motor-visual routine, treating arithmetic the way a pianist treats playing a chord: a fluid, embodied action rather than a step-by-step verbal calculation.

Why It Matters

This study provides the clearest neuroimaging evidence that advanced abacus training produces a fundamentally different cognitive strategy for arithmetic — one rooted in motor and visual areas rather than language areas. This helps explain why expert abacus users are so much faster: motor programs execute faster than verbal deliberation.

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Study 5: Frank & Barner (2012) — The Mental Abacus as a Stable Cognitive Tool

Journal: Psychological Science, Vol. 23, Issue 4
Research team: Michael Frank & David Barner, MIT and UC San Diego

What They Did

Frank and Barner investigated the nature of the "mental abacus" — the internalised cognitive representation that expert users manipulate in working memory. They used dual-task experiments: having expert abacus users perform arithmetic while simultaneously performing a secondary task designed to interfere with either verbal working memory or visuospatial working memory.

What They Found

When verbal working memory was disrupted (by having subjects repeat words aloud), expert performance was unaffected. When visuospatial working memory was disrupted, performance dropped sharply.

This elegant design confirmed that the mental abacus is a genuine visuospatial working memory object — not a verbal encoding, not a metaphor, but a real, structured mental image that experts can hold and manipulate with precision.

They also found that the mental abacus functions as a form of cognitive offloading: it allows users to perform computations that would exceed the typical limits of working memory by encoding numbers in a more efficient visual format.

Why It Matters

This study is foundational because it defines exactly what abacus training builds: not a set of memorised number facts, but a stable, functional cognitive tool that lives in visuospatial working memory. This distinction has profound implications for how we think about and teach mathematics.

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What These Studies Collectively Tell Us

Taken together, these five studies converge on a consistent picture:

1. Abacus training recruits visuospatial rather than verbal processing for arithmetic, producing measurable changes in both brain activation patterns and cognitive task performance.
2. Working memory — specifically the visuospatial component — is the primary mechanism through which benefits accrue and transfer to other academic domains.
3. The mental abacus is a real cognitive tool, not a metaphor, and it confers genuine computational advantages by encoding numbers as manipulable images.
4. Frequency and structure matter enormously — sporadic or unstructured practice produces much weaker effects than regular, tutored, progressive training.

Limitations and Open Questions

Good science requires acknowledging what we don't yet know.

Most studies to date involve relatively small samples and are concentrated in East Asia (Taiwan, China, Japan) and parts of India. Longitudinal data tracking children from training through adulthood is limited. We also lack large-scale randomised controlled trials with diverse populations — the gold standard for causal claims.

Additionally, the research has not yet fully disentangled the effects of abacus training from the effects of general musical or spatial education, high parental engagement, and the motivational effects of structured extra-curricular activity. Future research needs to address these confounds rigorously.

What This Means for Parents

When choosing an abacus programme, the research literature points clearly to what matters:

• Structured, progressive curriculum with defined levels
• Qualified instructors who understand both the tool and the pedagogy
• Regular practice frequency — at minimum three sessions per week
• Explicit visuospatial exercises — particularly flash anzan and mental calculation drills — not just physical bead manipulation

At AnzanPro, our curriculum design is informed directly by this research body. Our tutors are trained to understand not just how to teach the soroban, but why each exercise targets specific cognitive mechanisms — so that every minute of practice is working toward the transformation the science describes.

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Ready to see the research in action? Book a free trial class at anzanpro.com and watch your child experience the difference structured abacus training makes — from their very first session.