Elderly adults show an overall decrement in the complexity of oral and written statements attributable to an age-related loss of left-branching clauses across all three language samples¶
Claim · All claims
Evidence · 1 study · associationalr1·q2
Currency · newest study 1989 · not yet checked against its sources · not reviewed by a person · overdue for a recheck since 1994: baselines and conditions change
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? Adults aged 60-92 produced oral and written statements with lower syntactic complexity than adults aged 18-28, driven by fewer left-branching clauses in all three language samples. → Kemper 1989
Evidence¶
Kemper 1989¶
Kemper, S., Kynette, D., Rash, S., O'Brien, K., & Sprott, R. (1989). Life-span changes to adults' language: Effects of memory and genre. Applied Psycholinguistics, 10, 49-66. https://doi.org/10.1017/S0142716400008419
q2 · i? · associational · r1
Cross-sectional comparison of two age groups (young 18-28, elderly 60-92) across three language samples: an oral questionnaire, an oral statement, and a written statement. The article reports "an overall decrement in the complexity of adults' oral and written statements" tied to left-branching clause loss.
"There was an overall decrement in the complexity of adults' oral and written statements attributable to an age-related loss of left-branching clauses which occurred in all three language samples."
Discussion¶
Related Claims¶
- Adults with greater memory capacity, measured by WAIS Digits Backward, produced more complex utterances and used more right- and left-branching clauses — related
- Better-educated adults scored higher on WAIS vocabulary, produced longer utterances, and used more right-branching clauses — related
- Judges found statements from elderly adults more interesting and clearer than those from young adults, suggesting a trade-off between syntactic complexity and clear, interesting prose — related
- Mental health, especially depression, is probably the single most decisive factor in refugee language learning — related
Page metadata
| Field | Value |
|---|---|
type |
claim |
id |
aging-reduces-syntactic-complexity-left-branching-loss |
title |
Elderly adults show an overall decrement in the complexity of oral and written statements attributable to an age-related loss of left-branching clauses across all three language samples |
description |
Elderly adults show an overall decrement in the complexity of oral and written statements attributable to an age-related loss of left-branching clauses across all three language samples |
status |
review |
evidence_strength |
moderate |
newest_evidence |
1989 |
recheck_by |
1994 |
generated |
by process:wiki-ingest on 2026-10-17 |
trust |
unverified — no one has confirmed this page's content |
sources |
1 — kemper-1989 |
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