Quick facts
Sleep sits at the centre of circadian development and safe sleep — a theme that developmental science, anthropology, and public health have studied across decades and continents.
Scores on this page rank evidence strength, daily-life impact, difficulty, age span, expert consensus, and urgency relative to other parenting topics in the atlas.
Research from Bowlby, Baumrind, Montessori, WHO, and UNICEF informs the sections below — always interpreted as educational context, not individual medical advice.
The profile
- Evidence strength91
- Daily impact95
- Difficulty70
- Age span95
- Expert consensus75
- Urgency88
Age range
0–18 years
Circadian development, night waking, and safe sleep environments — among the most researched and debated parenting topics globally.
Seven ways into this topic
Frequently asked questions
What defines sleep?
Is there strong evidence on sleep?
Does sleep apply at every age?
How hard is sleep in practice?
What do experts agree on?
How urgent is attention to sleep?
Is this US-only advice?
Where should I start?
Sources & research
More in Everyday issues
Feeding
Breast, bottle, solids, and picky eating — Ellyn Satter's division of responsibility frames feeding as a relational not battlefield task.
Evidence 93 📱Screen Time
Screens displace sleep, movement, and conversation — WHO, AAP, and UNESCO guidance converges on limits under five with quality over quantity debates.
Evidence 82 🚧Discipline Conflicts
When limits meet resistance — discipline conflicts escalate when stress, inconsistency, or developmental mismatch go unaddressed.
Evidence 79 👯Sibling Rivalry
Competition for attention and resources — Judy Dunn's sibling research shows conflict is normative but manageable with fair attention and teaching repair.
Evidence 76 🎒School Readiness
Self-regulation beats flashcards — school readiness combines executive function, language, and social entry more than early academic drilling.
Evidence 88