Differential effects of gender and ethnicity on children’s receptive language scores after a Canadian two-generation preschool program: follow-up to adolescence
Bibliographic record
Abstract
Preschool programs for socially vulnerable children are believed to affect school readiness and language development but infrequently include follow-up to adolescence; observational measurement of receptive vocabulary is rare. The purpose of this longitudinal cohort study (55 children and 41 parents) was to report the trajectory of receptive vocabulary development for socially vulnerable children of diverse ethnicities (Indigenous, other Canadian-born, and Immigrant) who participated in a two-generation preschool program. English receptive vocabulary scores were measured at 5-time points: (a) program intake, (b) program exit, (c) age 7 years, (d) age 10 years, and (e) adolescence, using the Peabody Picture Vocabulary Test – Third Edition (PPVT-III). For all children, PPVT-III scores increased the most between program intake and exit and positive changes were sustained until adolescence. When the sample was examined by gender, PPVT-III scores were higher for boys than girls at all time points. When the sample was examined by ethnicity, other Canadian-born children scored higher than Indigenous and Immigrant children at all time points. Immigrant children scored lowest until age 7 years, and at age 10 years and adolescence scored higher than Indigenous children. Using mixed-effects modeling, PPVT-III scores increased when English was the primary language spoken at home at intake. PPVT-III scores increased slightly as caregiver age and caregiver Adverse Childhood Experiences score increased. PPVT-III scores were lower for Immigrant girls and Indigenous boys than other sub-groups of children. Differential effects of the two-generation preschool program by gender and ethnicity suggest tailoring programming to increase equitability of receptive vocabulary development for immigrant girls and Indigenous boys. Children with intergenerational adversity may require additional support.
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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 | 0.002 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".