Very few adult immigrants score within the range of child arrivals on a grammaticality judgment test, and those who do have high verbal analytical ability¶

Claim · All claims
Evidence · 1 study · associational r? · q3
Currency · newest study 2000 · not yet checked against its sources · 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.

q3 i? Very few adult immigrants scored within the range of child arrivals on a grammaticality judgment test, and the few who did had high levels of verbal analytical ability. → Robert M. DeKeyser 2000

Evidence¶

Robert M. DeKeyser 2000¶

Robert M. DeKeyser. (2000). THE ROBUSTNESS OF CRITICAL PERIOD EFFECTS IN SECOND LANGUAGE ACQUISITION. Studies in Second Language Acquisition, Volume 22, Issue 4. https://doi.org/10.1017/S0272263100004022

q3 · i? · associational · r?

A study of 57 adult Hungarian-speaking immigrants used a grammaticality judgment test to compare late arrivals with child arrivals. The article reports that "very few adult immigrants scored within the range of child arrivals" and that those few had high verbal analytical ability.

"A study with 57 adult Hungarian-speaking immigrants confirmed the hypothesis in the sense that very few adult immigrants scored within the range of child arrivals on a grammaticality judgment test, and that the few who did had high levels of verbal analytical ability"

Discussion¶

Learner Variables¶

General Cognitive Ability — predictor: learners who differ on it differ in outcomes

Secondary academic performance is predicted by cognitive ability more strongly than by curiosity — the general claim this finding bears on, with the studies behind it
Verbal analytical ability is not a significant predictor of second language success for childhood arrivals — related

Page metadata

Field	Value
`type`	`claim`
`id`	`few-adult-immigrants-match-child-range-gjt-verbal-analytical-ability`
`title`	`Very few adult immigrants score within the range of child arrivals on a grammaticality judgment test, and those who do have high verbal analytical ability`
`description`	`Very few adult immigrants score within the range of child arrivals on a grammaticality judgment test, and those who do have high verbal analytical ability`
`status`	`review`
`evidence_strength`	`moderate`
`newest_evidence`	`2000`
`generated`	by `process:wiki-ingest` on `2026-10-15`
`trust`	unverified — no one has confirmed this page's content
`sources`	1 — `robert-m-dekeyser-2000`

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