Claims

Practice of grammar rules improves only the practiced skill, showing skill specificity of L2 automatization

Claim · All claims
Evidence · 2 studies · 1 causal r?, 1 review r2 · q2–q3
Currency · newest study 2022 · 1 of 2 entries checked against their sources (automated) · not reviewed by a person

Subclaims

Reading the evidence codes

q is the design tier, i the impact, n the sample, and the kind with its r the rigour judged within that kind: what each code means.

This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.

q2 i? A large amount of practice of grammar rules in comprehension and production leads to improvement in the practiced skill, evidence of skill specificity. → Aydinbek C 2022

q3 i? The learning of morphosyntactic rules in a second language is highly skill-specific, so that practicing a rule in comprehension does not automatically confer production skill and vice versa. → Robert M. DeKeyser 1997

Evidence

Aydinbek C 2022

Aydinbek C. (2022). Contributions of cognitive theory to the problem of automatization of grammatical structures in teaching foreign language. Educational Research and Reviews. https://doi.org/10.5897/ERR2022.4230

q2 · i? · review · r2

In the Results and Discussion section the review reports the longitudinal and fine-grained study by DeKeyser (1997), which supported the model of skill acquisition and showed improvement confined to the practiced skill; no effect size is printed.

"a large amount of practice of grammar rules in comprehension and production leads to improvement in the practiced skill, that is to say, the results have presented evidence of the skill specificity of the learning process"

Robert M. DeKeyser 1997

Robert M. DeKeyser. (1997). Beyond Explicit Rule Learning: Automatizing Second Language Morphosyntax. Studies in Second Language Acquisition, Volume 19, Issue 2. https://doi.org/10.1017/S0272263197002040

q3 · i? · causal · r?

Controlled experiment in an artificial language: all subjects received identical instruction and equal amounts of comprehension and production practice, while the assignment of rules to modality varied between groups. The study reports that "the learning of morphosyntactic rules is highly skill-specific."

"All subjects were taught the same rules and then practiced them, and all subjects had the same amount of comprehension and production practice, but which ruleswere practiced in comprehension and which in production varied between groups. Results showthat the learning of morphosyntactic rules is highly skill-specific"

Studies bearing on this claim

Does second-language practice carry over to skills and tasks other than the one practised? This table gathers the studies behind this claim and the 6 narrower claims that bear on it: 5 distinct studies (2 review, 1 causal, 1 theoretical, 1 design), q2–q3, 0 of 5 with an effect size coded. One row per study, codes as each entry records them; no effect is averaged and no verdict is drawn. Built by scripts/synthesize_claim.py from eval/synthesis/; a row that looks wrong is fixed on the claim it comes from.

Study Design Effect as recorded Bears on this claim through
Aydinbek C 2022 q2 · review · r2 i? this claim; Automatization of L2 skills requires extensive practice in a consistent environment, not r (supports)
Robert M. DeKeyser 1997 q3 · causal · r? i? this claim
Yingli Wang 2008 q2 · review · r2 i? Task rehearsal improves fluency and complexity on the repeated task but does not transfer (supports)
Joshua Wedlock & Christopher Binnie 2025 q2 · theoretical · r2 i? Structured repetition gains in fluency depend on repeating the same task (supports)
Rafael Zaccaron 2019 q2 · design · r1 i? Immediate task repetition benefits oral performance, including fluency, self-correction an (qualifies); Lynch and Maclean's carousel task showed immediate repetition benefits in pronunciation, v (qualifies); Across repetition cycles, attention can shift from message meaning to linguistic form, ena (qualifies)

Discussion

Learner Variables

Page metadata
Field Value
type claim
id skill-specificity-l2-grammar-practice
aliases l2-morphosyntax-learning-highly-skill-specific
title Practice of grammar rules improves only the practiced skill, showing skill specificity of L2 automatization
description Practice of grammar rules improves only the practiced skill, showing skill specificity of L2 automatization
status review
evidence_strength weak
newest_evidence 2022
generated by process:wiki-ingest on 2026-09-28
trust unverified — no one has confirmed this page's content
sources 2 — aydinbek-c-2022, robert-m-dekeyser-1997

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