Evidence map›Paper›PMID 37002242›Full record

ArticleNPJ science of learning2023

Retrieval practice is costly and is beneficial only when working memory capacity is abundant.

Yicong Zheng, Pengyuan Sun, Xiaonan L Liu

Erratum issuedAbstract read
In one paragraph

Article in NPJ science of learning, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed.

  1. Article
  2. The Effects of Individualized Arousal on Recognition Memory of Words.Behavioral sciences (Basel, Switzerland) · 2026
    Article
  3. Review
  4. Article
  5. Article
  6. Article
  7. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Yicong ZhengDepartment of Psychology, University of California, Davis, CA, USA.ORCID http://orcid.org/0000-0003-4925-6069
Pengyuan SunDepartment of Psychology, National University of Singapore, Singapore, Singapore.
Xiaonan L LiuDepartment of Psychology, The Chinese University of Hong Kong, Hong Kong, Hong Kong. xliu@cuhk.edu.hk.ORCID http://orcid.org/0000-0001-6021-9889

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Numerous studies have shown that learned information practiced by testing is better retained than that practiced by restudying (the testing effect). However, results are inconsistent regarding the effect of working memory (WM) capacity on the testing effect. Here, we hypothesize that the effect of WM only emerges when task demands challenge WM capacity. We manipulated WM demands by pretraining 30 undergraduate participants in a multi-session visual search task before an associative learning task involving a test/restudy manipulation. The results revealed that, while participants with higher WM capacity showed a consistent testing effect, the benefit of testing only emerged in participants with lower WM capacity when learning familiar stimuli (low WM demands). We simulated the results using a modified source of activation confusion (SAC) model, which implemented a dual-process account of the testing effect. The results suggested that the testing effect only emerges when WM capacity is adequate for both processes.

Identifiers

PMID37002242
PMCPMC10066312

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.