Research Library

Every source, annotated and linked.

These are the peer-reviewed studies, reviews and meta-analyses that Cognitive Lab cites. Each links to its DOI or publisher and says, in plain language, what it shows. Key sources have a full research record: design, findings, limitations and our interpretation, kept separate.

PrototypeAnnotations are written by the Cognitive Lab team and have not yet been checked by external reviewers. Read the original source before relying on a claim.

27 sources · sources with full research records listed first

Systematic review2021
Perry, T., Lea, R., Jørgensen, C. R., Cordingley, P., Shapiro, K., & Youdell, D. (2021). Cognitive science approaches in the classroom: A review of the evidence. Education Endowment Foundation.
A systematic review of classroom evidence for approaches derived from cognitive science. Concludes that the principles are promising but that classroom evidence is more variable than laboratory evidence and implementation matters.
Publisher page(opens in a new tab)
Research recorddesign, findings, limitations
Research question
What does classroom evidence say about approaches such as spacing, retrieval, interleaving, dual coding and cognitive load?
Design
A systematic review of classroom evidence for cognitive-science-informed approaches.
What it found
The principles are broadly promising, but classroom evidence is more limited and variable than laboratory evidence.
How an approach is implemented, and with which content and pupils, appears to matter.
Limitations
Classroom studies differ widely in quality and design.
Some approaches have very few school-based studies.
Educational implications
Treat cognitive science as a set of principles to adapt thoughtfully and check, not a fixed set of routines.
Cognitive Lab interpretation
This review is one reason Cognitive Lab separates established findings from classroom applications.
Editorial summary · last checked 2026-10-18 · not independently reviewed
Narrative review2013
Dunlosky, J., Rawson, K. A., Marsh, E. J., Nathan, M. J., & Willingham, D. T. (2013). Improving students’ learning with effective learning techniques: Promising directions from cognitive and educational psychology. Psychological Science in the Public Interest, 14(1), 4–58.
Evaluated ten study techniques against a common set of criteria; practice testing and distributed practice received the highest utility ratings.
doi:10.1177/1529100612453266(opens in a new tab)
Research recorddesign, findings, limitations
Research question
Which commonly recommended study techniques have strong evidence across learners, materials and settings?
Design
A narrative review that rated ten learning techniques on their utility using the available evidence.
What it found
Practice testing and distributed practice were rated as high utility.
Elaborative interrogation, self-explanation and interleaved practice were rated as moderate utility.
Summarisation, highlighting, the keyword mnemonic, imagery for text and rereading were rated as low utility.
Limitations
Ratings are expert judgements, not a formal meta-analysis.
The evidence base reviewed predates many recent classroom studies.
A “low utility” rating means limited evidence of broad benefit, not that a technique never helps.
Educational implications
Teachers can prioritise retrieval and spacing when helping students study independently, and be cautious about rereading and highlighting as main strategies.
Cognitive Lab interpretation
Cognitive Lab uses this review as a map of relative evidence strength rather than a ranking to apply mechanically.
Editorial summary · last checked 2026-10-18 · not independently reviewed
Experimental study2006
Roediger, H. L., & Karpicke, J. D. (2006). Test-enhanced learning: Taking memory tests improves long-term retention. Psychological Science, 17(3), 249–255.
A widely cited demonstration that recalling prose passages produced better retention on delayed tests than restudying, although restudy looked stronger on an immediate test.
doi:10.1111/j.1467-9280.2006.01693.x(opens in a new tab)
Research recorddesign, findings, limitations
Research question
Does taking a memory test improve long-term retention more than studying the same material again?
Design
Two laboratory experiments comparing restudying with taking recall tests, with final tests at several delays.
Participants
Undergraduate students.
What it found
On a test five minutes later, students who restudied tended to recall as much or more than those who were tested.
On tests two days and one week later, students who had been tested recalled more than those who restudied.
Students who repeatedly restudied predicted they would remember more than students who were repeatedly tested.
Limitations
University students reading short prose passages in a laboratory.
The final measure was free recall of the passages, not a classroom assessment.
Delays were measured in days, not months.
Educational implications
How learning looks immediately after study can be a poor guide to how much will be retained. Recall attempts are worth their apparent inefficiency.
Cognitive Lab interpretation
Cognitive Lab treats this as a clear, well-replicated demonstration rather than as proof that any quiz will help. Later classroom studies are needed to establish how far it generalises.
Editorial summary · last checked 2026-10-18 · not independently reviewed
Meta-analysis2006
Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Psychological Bulletin, 132(3), 354–380.
Quantitative synthesis of the spacing effect: distributing practice over time generally improved retention compared with massed practice.
doi:10.1037/0033-2909.132.3.354(opens in a new tab)
Research recorddesign, findings, limitations
Research question
How does the gap between study sessions affect later recall, and does the best gap depend on when memory is tested?
Design
A quantitative synthesis of experiments on distributed practice in verbal recall tasks.
What it found
Spacing study sessions generally produced better recall than massing them together.
The most effective gap tended to increase as the time until the final test increased.
Limitations
Mostly verbal recall tasks such as word lists and facts.
Many included studies were laboratory-based with adult participants.
Educational implications
Review should be spread out, and material that must last longer benefits from longer gaps between reviews.
Cognitive Lab interpretation
This supports planned review across weeks. It does not specify an ideal schedule for a particular class or subject.
Editorial summary · last checked 2026-10-18 · not independently reviewed
Systematic review2021
Agarwal, P. K., Nunes, L. D., & Blunt, J. R. (2021). Retrieval practice consistently benefits student learning: A systematic review of applied research in schools and classrooms. Educational Psychology Review, 33, 1409–1453.
Focused specifically on applied studies in real classrooms across ages and subjects — directly relevant to teachers.
doi:10.1007/s10648-021-09595-9(opens in a new tab)
Meta-analysis2021
Yang, C., Luo, L., Vadillo, M. A., Yu, R., & Shanks, D. R. (2021). Testing (quizzing) boosts classroom learning: A systematic and meta-analytic review. Psychological Bulletin, 147(4), 399–435.
Meta-analysis restricted to classroom studies, examining moderators and assessing publication bias.
doi:10.1037/bul0000309(opens in a new tab)
Book2021
Willingham, D. T. (2021). Why don’t students like school? (2nd ed.). Jossey-Bass.
A cognitive scientist’s account of how memory, thinking and background knowledge shape classroom learning, written for teachers.
Meta-analysis2018
Pan, S. C., & Rickard, T. C. (2018). Transfer of test-enhanced learning: Meta-analytic review and synthesis. Psychological Bulletin, 144(7), 710–756.
Reviewed whether benefits of retrieval transfer to different question types and contexts; transfer was present but more variable than for practised items.
doi:10.1037/bul0000151(opens in a new tab)
Meta-analysis2017
Adesope, O. O., Trevisan, D. A., & Sundararajan, N. (2017). Rethinking the use of tests: A meta-analysis of practice testing. Review of Educational Research, 87(3), 659–701.
Meta-analysis across laboratory and classroom studies, including comparisons of practice-test formats and educational levels.
doi:10.3102/0034654316689306(opens in a new tab)
Narrative review2017
Tyng, C. M., Amin, H. U., Saad, M. N. M., & Malik, A. S. (2017). The influences of emotion on learning and memory. Frontiers in Psychology, 8, 1454.
A broad review of how emotion interacts with attention, encoding and retrieval.
doi:10.3389/fpsyg.2017.01454(opens in a new tab)
Narrative review2016
Fiorella, L., & Mayer, R. E. (2016). Eight ways to promote generative learning. Educational Psychology Review, 28(4), 717��741.
Reviewed generative strategies such as summarising, mapping, drawing, self-testing and self-explaining.
doi:10.1007/s10648-015-9348-9(opens in a new tab)
Narrative review2015
van Gog, T., & Sweller, J. (2015). Not new, but nearly forgotten: The testing effect decreases or even disappears as the complexity of learning materials increases. Educational Psychology Review, 27(2), 247–264.
Argues, from a cognitive load perspective, that the testing effect weakens for complex, highly interactive material. An important boundary-condition challenge, not a refutation.
doi:10.1007/s10648-015-9310-x(opens in a new tab)
Narrative review2015
Karpicke, J. D., & Aue, W. R. (2015). The testing effect is alive and well with complex materials. Educational Psychology Review, 27(2), 317–326.
A direct reply to van Gog and Sweller, pointing to studies showing retrieval benefits with complex prose and concepts. Read the two together as an open debate.
doi:10.1007/s10648-015-9309-3(opens in a new tab)
Meta-analysis2014
Rowland, C. A. (2014). The effect of testing versus restudy on retention: A meta-analytic review of the testing effect. Psychological Bulletin, 140(6), 1432–1463.
Synthesised laboratory research comparing testing with restudy, examining moderators such as feedback, format and retention interval, and reviewing theoretical accounts.
doi:10.1037/a0037559(opens in a new tab)
Experimental study2014
Hinze, S. R., & Rapp, D. N. (2014). Retrieval (sometimes) enhances learning: Performance pressure reduces the benefits of retrieval practice. Applied Cognitive Psychology, 28(4), 597–606.
Introduced performance pressure during quizzing and found it reduced later benefits — a reason to keep retrieval low-stakes.
doi:10.1002/acp.3032(opens in a new tab)
Experimental study2014
Agarwal, P. K., D'Antonio, L., Roediger, H. L., McDermott, K. B., & McDaniel, M. A. (2014). Classroom-based programs of retrieval practice reduce middle school and high school students’ test anxiety. Journal of Applied Research in Memory and Cognition, 3(3), 131–139.
A self-report survey of students who had experienced low-stakes classroom quizzing; most reported lower, not higher, test anxiety. Self-report, with no control group.
doi:10.1016/j.jarmac.2014.07.002(opens in a new tab)
Book2014
Brown, P. C., Roediger, H. L., & McDaniel, M. A. (2014). Make it stick: The science of successful learning. Belknap Press of Harvard University Press.
An accessible book by two memory researchers and a writer, covering retrieval, spacing, interleaving and the illusions of fluency that mislead learners.
Experimental study2011
Karpicke, J. D., & Blunt, J. R. (2011). Retrieval practice produces more learning than elaborative studying with concept mapping. Science, 331(6018), 772–775.
Compared retrieval practice with concept mapping as a study activity, including on inference questions.
doi:10.1126/science.1199327(opens in a new tab)
Experimental study2011
McDaniel, M. A., Agarwal, P. K., Huelser, B. J., McDermott, K. B., & Roediger, H. L. (2011). Test-enhanced learning in a middle school science classroom: The effects of quiz frequency and placement. Journal of Educational Psychology, 103(2), 399–414.
Classroom experiments in US middle school science: low-stakes quizzes improved performance on later unit and end-of-semester exams for quizzed material compared with non-quizzed material.
doi:10.1037/a0021782(opens in a new tab)
Experimental study2010
Butler, A. C. (2010). Repeated testing produces superior transfer of learning relative to repeated studying. Journal of Experimental Psychology: Learning, Memory, and Cognition, 36(5), 1118–1133.
Examined whether testing helps learners apply knowledge to new questions and contexts, not only recall the original material.
doi:10.1037/a0019902(opens in a new tab)
Experimental study2009
Karpicke, J. D., Butler, A. C., & Roediger, H. L. (2009). Metacognitive strategies in student learning: Do students practise retrieval when they study on their own?. Memory, 17(4), 471–479.
Surveyed university students’ study habits; rereading was far more common than self-testing, suggesting that learners underuse retrieval.
doi:10.1080/09658210802647009(opens in a new tab)
Experimental study2009
Kornell, N., Hays, M. J., & Bjork, R. A. (2009). Unsuccessful retrieval attempts enhance subsequent learning. Journal of Experimental Psychology: Learning, Memory, and Cognition, 35(4), 989–998.
Attempting to answer before seeing the answer — even when the attempt failed — improved later memory compared with simply studying.
doi:10.1037/a0015729(opens in a new tab)
Experimental study2008
Karpicke, J. D., & Roediger, H. L. (2008). The critical importance of retrieval for learning. Science, 319(5865), 966–968.
Separated the effects of repeated studying and repeated testing in foreign-language vocabulary learning; repeated retrieval drove long-term retention.
doi:10.1126/science.1152408(opens in a new tab)
Experimental study2008
Butler, A. C., & Roediger, H. L. (2008). Feedback enhances the positive effects and reduces the negative effects of multiple-choice testing. Memory & Cognition, 36(3), 604–616.
Multiple-choice tests can lead learners to remember incorrect options; feedback reduced this and strengthened the benefit of testing.
doi:10.3758/MC.36.3.604(opens in a new tab)
Meta-analysis2006
Nesbit, J. C., & Adesope, O. O. (2006). Learning with concept and knowledge maps: A meta-analysis. Review of Educational Research, 76(3), 413–448.
Pooled studies comparing concept and knowledge maps with reading text, attending lectures and discussion. Benefits were found across many comparisons, with effects varying by how maps were used and what they were compared against.
doi:10.3102/00346543076003413(opens in a new tab)
Narrative review2001
Cowan, N. (2001). The magical number 4 in short-term memory: A reconsideration of mental storage capacity. Behavioral and Brain Sciences, 24(1), 87–114.
Argued that the capacity of the focus of attention in short-term memory is limited to a small number of chunks.
doi:10.1017/S0140525X01003922(opens in a new tab)
Experimental study1994
Anderson, M. C., Bjork, R. A., & Bjork, E. L. (1994). Remembering can cause forgetting: Retrieval dynamics in long-term memory. Journal of Experimental Psychology: Learning, Memory, and Cognition, 20(5), 1063–1087.
The original laboratory demonstration of retrieval-induced forgetting: practising some items from a category can temporarily impair recall of related, unpractised items.
doi:10.1037/0278-7393.20.5.1063(opens in a new tab)