Teaching pupils in grades 1–8 (about ages 6–14) how to plan, monitor and check their own learning (metacognitive strategy instruction) raises their school performance compared with ordinary teaching in research studies, and a gain of roughly 0.3 standard deviations or more is still there at a follow-up test weeks or months later. It is not guaranteed at scale: in a large English trial with cascade-trained teachers, two years of a self-regulated writing programme did not raise writing, and pupils scored lower in reading, spelling and maths (Torgerson et al. 2018).
Status
weakened
Last change
2026-11-15
Serves
Q1 (How do humans actually learn, and what helps them learn best?)
Ages
grundskola-lag, grundskola-hog, gymnasium
Area
Metacognition and self-regulation
Bounds
Teaching learners strategies for planning, monitoring and evaluating their own learning, with school performance as the outcome and a later follow-up; not retrieval practice itself (C0), spacing/interleaving schedules (C11), or feedback type (C4). Evidence on file: de Boer, Donker, Kostons & van der Werf 2018 (Educational Research Review 24, 98–115, DOI 10.1016/j.edurev.2018.03.002; full text stored from University of Groningen Pure): meta-analysis of 48 metacognitive strategy-instruction interventions in school contexts with follow-up at least three weeks after the programme (mean 21.6 weeks, range 3–108); posttest Hedges' g = 0.50 (SE 0.07), follow-up g = 0.63 (SE 0.07); post-to-follow-up difference g = 0.12 (SE 0.04, 95% CI 0.05–0.19). Kill-condition test survived 2026-10-27 (de Boer et al. 2018): the follow-up gain was not gone and was slightly larger than the posttest effect. Scope note (mining 2026-10-27): the meta's school sample is grades 1–8 only (higher secondary not represented); trim-and-fill for publication bias lowers the post–follow-up difference to g = 0.09 (SE 0.04) but it stays significant. Kill-condition test survived 2026-10-27 extra5 (Eberhart, Ingendahl & Bryce 2025, Metacognition and Learning 20:7, DOI 10.1007/s11409-024-09405-x; OA full text read): multi-level meta of 67 metacognition interventions in typically developing pre- and elementary children (≤12 years; 349 effect sizes); immediate g = 0.48 (95% CI 0.35–0.61); follow-up (19 studies, mean 15 weeks, range 3–48) g = 0.29 (SE 0.06, 95% CI 0.17–0.40); Language at follow-up g = 0.45; Metacognition-alone follow-up ns (g = 0.12); age band younger than gymnasium; funnel asymmetry at follow-up. Kill-condition test survived 2026-10-27 extra11 (Tuero, Núñez, Vallejo, Fernández, Añón, Moreira, Martins & Rosário 2022, Frontiers in Psychology 13:889201, DOI 10.3389/fpsyg.2022.889201; Frontiers OA full text): classroom-randomised school-based SRL (Rainbow Program; planning–execution–evaluation) vs standard curriculum; 761 grade 3–4 pupils in 50 classes / 14 schools; teacher-rated academic scores (science, Spanish, English, maths) at post-test and 3-month follow-up; combined subjects post-test d = 0.25, follow-up d = 0.33; per-subject follow-up significant for science (d = 0.31), Spanish (d = 0.35) and English (d = 0.28), maths ns (d = 0.11). Dignath & Büttner 2008 (full text stored 2026-10-27 extra11): posttest academic ES primary 0.61 / secondary 0.54; no follow-up durability pool — Bounds support only, not a kill-condition survival. Scale bound (added 2026-11-15, nightly attack): Torgerson et al. 2018 (IPEELL: Evaluation report and executive summary, Education Endowment Foundation; independent evaluation by Durham University and the University of York; full report read): two pragmatic school-randomised trials of IPEELL, an English adaptation of Self-Regulated Strategy Development (planning, drafting, self-monitoring, goal setting and evaluating one's writing) bundled with 'memorable experiences', in 84 primary schools in Leeds and Lincolnshire (2015–2017), teachers trained for one day by newly recruited trainers (train-the-trainers), control = usual teaching. One year in Year 6 (2,465 pupils analysed): KS2 writing g = −0.09 (95% CI −0.34 to 0.15); KS2 reading −0.23 (−0.43 to −0.04). Two years in Years 5–6 (2,196 analysed; about 20% missing): independently administered, blind-marked writing test g = 0.11 (−0.13 to 0.34), low prior attainers 0.26 (−0.01 to 0.53); KS2 reading −0.17 (−0.33 to −0.01), maths −0.30 (−0.53 to −0.07), spelling, punctuation and grammar −0.28 (−0.49 to −0.06). Outcomes taken at the end of the programme, not at a later follow-up, so the kill-condition was not tested. The earlier efficacy trial of the same programme, delivered by its developers to low-attaining pupils at the primary–secondary transition, had found an effect size of about 0.75 (Torgerson et al. 2014, as cited in the 2018 report; +0.74 in the EEF summary). The evaluators point to weak training (inexperienced trainers, little modelling) and possible loss of curriculum time from other subjects; 59.5% of intervention schools were rated as implementing well; exploratory complier estimate for two years 0.19 (−0.23 to 0.60).
What would kill this
A large randomised trial or meta-analysis finds that the gain from metacognitive strategy instruction is gone, or no larger than in comparison classes, at a follow-up test weeks or months later. Sharpened 2026-10-29 (bold expansion): the claim also dies if such a trial or meta-analysis finds a follow-up gain below about 0.1 standard deviations. Promoted from K46 on 2026-10-27 under the project's promotion rule when C8 reached the survival floor of 3; standing policy Jonatan approved 2026-10-14). Uncovered area: Metacognition and self-regulation. Reached the survival floor (3) on 2026-10-27 extra11 (Tuero et al. 2022).
Tutor consequence
none yet
Attack record
4 attacks: 3 survived, 1 narrowed
2026-10-27 survived
Attack
A meta-analysis of metacognitive strategy-instruction interventions with follow-up tests would meet C19's kill-condition if the academic gain were gone, or no larger than in comparison classes, weeks or months later; de Boer, Donker, Kostons & van der Werf 2018 found follow-up Hedges' g = 0.63 against posttest 0.50.
Target
kill-condition
Source
de Boer, Donker, Kostons & van der Werf 2018 | Educational Research Review 24, 98–115, DOI 10.1016/j.edurev.2018.03.002
Steelmans to
C19 dies if a large randomised trial or meta-analysis finds the gain from metacognitive strategy instruction gone or no larger than comparison at a later follow-up; this is the main long-term meta of such school interventions and the claim's own supporting source once the full text is read.
Why
Extra3 attack pass 2026-10-27 Europe/Stockholm (week-2 floor push; C14/C16 OA kill-texts blocked; strongest honest open-text attack on a below-floor claim under parent brief). Ordinary rotation slot for never-targeted C19. Full text read and stored (University of Groningen Pure publisher PDF; Taverne self-archive). 48 interventions, school context, follow-up ≥3 weeks (mean 21.6, SD 23.5); posttest g = 0.50 (SE 0.07), follow-up g = 0.63 (SE 0.07); post–follow-up difference g = 0.12 (SE 0.04, 95% CI 0.05–0.19). Kill fails: the later gain was not gone. Limits: meta of existing trials (not one new RCT); intervention packages mix metacognitive with cognitive/management/motivational components; Dignath & Büttner 2008 still abstract-only in the project. Not a preprint. Claim sentence and Status unchanged (alive). Bounds and the practical rule updated same turn (abstract-only caveat removed for this source).
Rewrite
none (bounds + practical rule only)
2026-10-27 survived
Attack
A newer multi-level meta-analysis of metacognition interventions in young children would meet C19's kill-condition if the gain were gone, or no larger than comparison, at a later follow-up; Eberhart, Ingendahl & Bryce 2025 found follow-up g = 0.29 (95% CI 0.17–0.40) against posttest 0.48.
Target
kill-condition
Source
Eberhart, Ingendahl & Bryce 2025 | Metacognition and Learning 20, article 7, DOI 10.1007/s11409-024-09405-x (published online 30 Dec 2024)
Steelmans to
C19 dies if a large randomised trial or meta-analysis finds the gain from metacognitive strategy instruction gone or no larger than comparison at a later follow-up; this is an independent OA meta (67 studies; 19 with follow-up) of metacognition interventions in pre- and elementary school, distinct from de Boer et al. 2018.
Why
Extra5 attack pass 2026-10-27 Europe/Stockholm (parent: focused OA kill-hunt; prefer C19/C16/C14). Full text read from Springer OA HTML (CC BY 4.0; PDF bot-gated from the box; numbers transcribed to ). 349 effect sizes, 67 studies, typically developing children mean age ≤12; 19 studies with follow-up (mean 15 weeks, range 3–48). General follow-up g = 0.29, SE 0.06, 95% CI [0.17, 0.40], p < .001. Language at follow-up g = 0.45 [0.29, 0.60]. Kill fails: the later gain was not gone. Limits: age band is pre/elementary only (not gymnasium); follow-up Metacognition outcome alone ns (g = 0.12); self-efficacy follow-up fragile to one influential study; funnel asymmetry at follow-up (Egger Q = 7.18, p = .007); researcher-developed academic tests show larger effects than standardised. Not a restatement of de Boer 2018 (different meta, younger sample, newer evidence). Not a preprint. Claim sentence and Status unchanged (alive). Bounds and the practical rule updated same turn. C19 now 2 of 3 survivals.
Rewrite
none (bounds + practical rule only)
2026-10-27 survived
Attack
A classroom-randomised school-based SRL trial with a 3-month academic follow-up would meet C19's kill-condition if the gain were gone, or no larger than comparison, at that later test; Tuero, Núñez, Vallejo, Fernández, Añón, Moreira, Martins & Rosário 2022 found combined academic performance d = 0.33 at follow-up against d = 0.25 at post-test.
Target
kill-condition
Source
Tuero, Núñez, Vallejo, Fernández, Añón, Moreira, Martins & Rosário 2022 | Frontiers in Psychology 13:889201, DOI 10.3389/fpsyg.2022.889201
Steelmans to
C19 dies if a large randomised trial or meta-analysis finds the gain from metacognitive strategy instruction gone or no larger than comparison at a later follow-up; this is an independent OA classroom-randomised trial (761 pupils; Rainbow Program SRL with planning–execution–evaluation) with a 3-month academic follow-up, distinct from de Boer et al. 2018 and Eberhart et al. 2025.
Why
Extra11 attack pass 2026-10-27 Europe/Stockholm (parent: C19 2→3 OA kill-hunt). Full text read and stored (Frontiers OA PDF). 50 classes in 14 schools randomly assigned; 761 grade 3–4 pupils analysed (405 experimental, 356 control); 12-session Rainbow Program embedded in regular teaching (Zimmerman/Rosário PLEJE; metacognitive planning, monitoring and evaluation). Combined four subjects: Group × Time post-test d = 0.25 (p = .0006), follow-up d = 0.33 (p < .0001). Per-subject follow-up: science d = 0.31, Spanish d = 0.35, English d = 0.28 (all significant); maths d = 0.11 ns. Kill fails: the later academic gain was not gone. Limits: primary grades only (not gymnasium); teacher-rated non-standardised subject scores; maths alone ns; incidental class sampling in one Spanish region; intervention is SRL package (metacognitive components central, not metacognition-alone). Not a restatement of de Boer 2018 or Eberhart 2025 (new RCT). Not a preprint. Claim sentence and Status unchanged (alive). Bounds and the practical rule updated same turn. C19 now 3 of 3 survivals → floor.
Rewrite
none (bounds + practical rule only)
2026-11-15 narrowed
Attack
In the largest school-randomised trial on file of a metacognitive strategy programme run as ordinary schools would run it (IPEELL, an English version of Self-Regulated Strategy Development that teaches pupils to plan, monitor, set goals for and evaluate their writing; 84 primary schools, about 5,400 pupils in Years 5–6), pupils did not write better than with usual teaching after one or two years, and after two years they scored lower on national tests in reading, spelling and maths, so C19's unqualified "raises their school performance compared with ordinary teaching" does not hold at scale.
Target
claim-text
Source
Torgerson, Ainsworth, Bell, Elliott, Fountain, Gascoine, Hewitt, Kasim, Kokotsaki & Torgerson 2018 | IPEELL: Evaluation report and executive summary, Education Endowment Foundation, London, November 2018 (independent evaluation, Durham University and University of York; full report PDF from the EEF project page read in full and stored privately)
Steelmans to
C19 says metacognitive strategy instruction raises school performance against ordinary teaching, without limiting this to research-led delivery; its evidence is meta-analyses (mostly small, often researcher-made tests; Donker et al. 2014 report larger effects on researcher-made tests) and one classroom RCT. A pre-registered, independently evaluated cluster RCT of the flagship metacognitive writing programme, with blinded, independently marked tests and national test records, is the strongest test of whether the gain survives everyday delivery — and its own efficacy trial had found +0.74.
Why
Nightly-attacks 2026-11-15 Europe/Stockholm (ordinary rotation). Full text: two pragmatic cluster RCTs, schools randomised 1:1 (84 schools; Leeds and Lincolnshire; FSM 33%), teachers trained one day by newly recruited trainers (train-the-trainers) plus a manual and networking; control = business as usual. Trial 1 (one year, Year 6; 2,465 pupils analysed): KS2 writing (teacher-assessed, ordinal) g = −0.09 (−0.34 to 0.15); reading −0.23 (−0.43 to −0.04); maths −0.22 (−0.47 to 0.04); spelling, punctuation and grammar −0.22 (−0.46 to 0.01) (Table 1, Table 11). Trial 2 (two years, Years 5–6; 2,196 analysed; 78 of 83 schools sat the test; about 20% missing): independently administered, blind-marked writing test g = 0.11 (−0.13 to 0.34); low prior attainers 0.26 (−0.01 to 0.53); KS2 reading −0.17 (−0.33 to −0.01), maths −0.30 (−0.53 to −0.07; the text prints −0.02 as the upper limit), spelling, punctuation and grammar −0.28 (−0.49 to −0.06), KS2 writing −0.04 (Table 11). EEF security: very high (Trial 1) and high (Trial 2). Implementation: 59.5% of intervention schools rated good or very good in spring 2016; exploratory CACE for Trial 2 at least good implementation 0.19 (−0.23 to 0.60); very good implementers 0.30 (−0.08 to 0.69). Kill withheld: no follow-up after the programme; one programme in one subject; delivery weakened by inexperienced trainers (the evaluators' own conclusion) and bundled with "memorable experiences"; the authors suggest curriculum time moved from other subjects to writing. Narrowed: C19's gain is shown in research studies; at scale, with cascade training, it did not appear. Not a duplicate; not a restatement of the Bounds (no scale or delivery bound existed). Not a preprint. Status alive → weakened. Claim and Bounds rewritten the same turn; brief and the practical rule rewritten. Kill-match check: the new hedge concedes an end-of-programme null in one scaled-up trial; the kill-condition still names a result the claim does not concede (a follow-up gain gone or below about 0.1 SD in a large trial or meta-analysis) — no kill-mismatch. Fruitless streak 1 → 0.
Rewrite
claim-field+brief
Corrections to our notes
These fix a number or a fact in our notes. They are not attacks and do not count toward the floor of 3 survivals.
— From a closer reading of the study: de Boer et al. 2018 full text: included interventions only in grades 1–8; publication-bias trim-and-fill still leaves a significant post–follow-up gain (g = 0.09).
— Dignath & Büttner 2008 full text now readable: posttest academic ES primary 0.61 / secondary 0.54; no follow-up durability analysis.
— Wording change only, not an attack: a vague claim sentence was made sharper, so that real counter-evidence can kill it.
Strategy-instruction effects held at follow-up (posttest g = 0.50 → follow-up g = 0.63; mean 21.6 weeks); C19 kill-condition test survived 2026-10-27 (full text).
Kill-condition survival 2026-10-27 extra5: follow-up g = 0.29 (95% CI 0.17–0.40) vs posttest 0.48 in 19 studies (mean 15 weeks); Language follow-up g = 0.45. Age ≤12. Full text read (Springer OA).
Abstract: 58 studies, primary and secondary; strategy instruction effects g = 1.25 writing, .73 science, .66 maths, .36 reading comprehension; effects higher on researcher-made than intervention-independent tests; no difference by ability level. No follow-up or independent-test estimate in the abstract. Open access but blocked from the box.
Large school-randomised effectiveness trial (84 English primary schools) of IPEELL, a Self-Regulated Strategy Development writing programme with cascade-trained teachers: writing g = -0.09 after one year and 0.11 after two (neither significant); after two years KS2 reading -0.17, maths -0.30, spelling/grammar -0.28 (all significant). End-of-programme outcomes, no follow-up. C19 weakened 2026-11-15. Full text read.
Review state: first-pass draft, pending human review.