Investigating the effects of second language background, proficiency, and usage on episodic memory in middle-aged and older adults.
Bibliographic record
Abstract
As the aging population grows, it is important to investigate factors that protect against cognitive decline. Bilingualism is hypothesized to contribute to cognitive reserve. However, the research on the influence of bilingualism and related variables (e.g., age of second language [L2] acquisition and language usage) on episodic memory remains sparse. We investigate the role of L2 age of acquisition, proficiency, and usage on verbal and nonverbal episodic memory in middle-aged and older adult bilingual speakers of English and French. Accuracy on a verbal memory task was negatively associated with L2 usage at work. People with lower L2 proficiency and usage at home performed better on a nonverbal memory task in terms of accuracy and reaction time, respectively. Earlier L2 acquisition was associated with higher accuracy on the nonverbal memory task. We hypothesize that greater L2 engagement leads to increased effort to inhibit nonrelevant stimuli, impeding episodic memory retrieval, and the effort required is lower with earlier L2 acquisition. (PsycInfo Database Record (c) 2026 APA, all rights reserved).
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.001 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".