Longer nocturnal sleep duration in infants is associated with higher personal-social and communication development scores at 12 months
In a cohort of 646 Iranian infants, longer nocturnal sleep duration was significantly associated with higher personal-social development scores (β=0.52, p=0.03) and better communication scores (β=0.42, p=0.05). Increased night waking duration was negatively associated with personal-social and total ASQ scores, while more frequent night wakings were linked to lower problem-solving scores.
This article is automatically generated from the structured evidence profile behind the claim above. Scores reflect the quality and quantity of available research, not clinical advice.
Longer nocturnal sleep duration in infants is associated with higher personal-social and communication development scores at 12 months The current body of evidence comprises 1 study. EvidenceHub rates the overall confidence at 34/100 (low).
The Claim
Longer nocturnal sleep duration in infants is associated with higher personal-social and communication development scores at 12 months
This conclusion is most relevant to: 646 infants from the PERSIAN Birth Cohort in Isfahan, Iran.
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸The associations between infant sleep habits and neurodevelopmental outcomes at 12 months: a sub-study of the PERSIAN birth cohort. (Pediatric research, 2026) —
How It Works
The proposed biological pathway:
- ▸Infant sleep supports neural plasticity and brain maturation
- ▸Longer nocturnal sleep consolidates memory and social-emotional processing
- ▸Disrupted sleep (frequent/long night wakings) impairs cognitive and social development
- ▸Result: Better sleep continuity and duration enhance neurodevelopmental outcomes
Who Might Benefit
Evidence fit by population:
- ▸646 infants from the PERSIAN Birth Cohort in Isfahan, Iran
Recommended Dose
N/A
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Observational study, cannot establish causality
- ▸Single time point assessment at 12 months, no longitudinal follow-up
- ▸Reliance on parent-reported sleep and developmental questionnaires, potential recall bias
Frequently Asked Questions
What specific neurodevelopmental domains were associated with infant sleep?▼
Longer nocturnal sleep was associated with higher personal-social and communication scores. Night waking duration was negatively associated with personal-social and total ASQ scores, while night waking frequency was linked to lower problem-solving scores.
How was infant sleep measured in this study?▼
Sleep characteristics were assessed using the Brief Infant Sleep Questionnaire (BISQ), which included nocturnal and daytime sleep duration, night waking frequency and duration, sleep onset time, and sleep latency.
What population was studied?▼
The study included 646 infants from the PERSIAN Birth Cohort in Isfahan, Iran, representing a non-Western, Middle Eastern population.
What were the key limitations of this study?▼
The study was observational, so causality cannot be inferred. It relied on parent-reported data, which may introduce recall bias, and assessed outcomes only at 12 months without longitudinal follow-up.
References
- 1.Bemanalizadeh M, Yazdi M, Yaghini O, Goli P, Daniali SS, Kelishadi R. “The associations between infant sleep habits and neurodevelopmental outcomes at 12 months: a sub-study of the PERSIAN birth cohort..” Pediatric research, 2026. PMID: 42365166 DOI: 10.1038/s41390-026-05236-5