Normative instrumentOpen access
WHO Global Scale of Early Development (GSED v2)
World Health Organization · 2023
Normative Research
This is a population-level study. Its data informs the age windows and confidence scores behind our milestone predictions — telling us when most children reach a given milestone, and how much variation exists.
Countries
9
Bangladesh, Brazil, Ghana, India, Malawi, Pakistan, Tanzania, Thailand, Turkey
Age range
Birth
to 3 years
Milestones covered
153
in our corpus
Coverage by age & domain
Each cell shows how many items this source covers in that age band and developmental category. Darker = more coverage.
| 0–12mo | 12–24mo | 24–36mo | 36–48mo | 48–60mo | 60mo+ | |
|---|---|---|---|---|---|---|
| Body | 2 | |||||
| Curriculum | 58 | 33 | 59 | 6 | 2 |
Domains assessed
Gross motorFine motorLanguageCognitionSocial & emotional
How we used it
153 items mapped to canonical milestones via P31 B1 semantic matching pipeline.
Citation
WHO (2023). Global Scale of Early Development v2. Geneva: World Health Organization.
Developmental milestones (153)
Canonical milestones in our developmental ontology that cite this source.
- Moves body in reaction to caregivermilestone · 0–3mo
- Moves body, kicking legs and moving arms equally...milestone · 0–3mo
- Pulls to sit no head lagmilestone · 0–3mo
- Lifts head in prone 45 degreesmilestone · 3–6mo
- Lifts head, shoulders, chest when pronemilestone · 3–6mo
- Puts hands together in front of facemilestone · 3–6mo
- Carries object to mouth to exploremilestone · 3–6mo
- Reaches for an objectmilestone · 3–6mo
- Holds large objects with both handsmilestone · 5–17mo
- Balances head while supportedmilestone · 3–6mo
- Sits supported (with help)milestone · 3–6mo
- Resists object being taken awaymilestone · 3–6mo
- Sees a small objectmilestone · 3–6mo
- Sits momentarily (on his/her own)milestone · 3–6mo
- Sits without help (shortmilestone · 3–6mo
- Picks object from groundmilestone · 3–6mo
- Rolls from back to stomachmilestone · 3–6mo
- Sits by self wellmilestone · 3–6mo
- Raking Graspmilestone · 5–11mo
- Turns on floormilestone · 3–6mo
- Transition to Sittingmilestone · 7–11mo
- Stands with supportmilestone · 3–6mo
- Reaches for a second objectmilestone · 3–6mo
- Crawlsmilestone · 9–15mo
- Pulls up to standing positionmilestone · 9–12mo
- Switches objects from one hand to the othermilestone · 6–18mo
- Picks up very small objects between {his/her} thumb and forefinger (for example, cereal)milestone · 10–16mo
- Walks while holding on to someone with both handsmilestone · 10–16mo
- Stands alone for 5 seconds or more if...milestone · 12–15mo
- Plays ”give-and- take”milestone · 12–15mo
- Takes few steps alonemilestone · 12–15mo
- Walksmilestone · 12–15mo
- Runs (basic), may fall overmilestone · 12–15mo
- Stoops and recoversmilestone · 15–18mo
- Releases ball purposefullymilestone · 18–21mo
- Runs wellmilestone · 21–24mo
- Kicks a moving ballmilestone · 36–42mo
- Runs towards a ball and kicks itmilestone · 36–42mo
- Kneels and then stands, without using handsmilestone · 30–33mo
- Hops forward on 1 foot 3 stepsmilestone · 33–36mo
- Jumps with 2 feet togethermilestone · 33–36mo
- Jumps over a piece of paper (widthways)milestone · 33–36mo
- Walks in a heel-to-toe motionmilestone · 36–48mo
- Throws beanbag on to a clothmilestone · 33–36mo
- Stands on one foot for at least two secondsmilestone · 48–60mo
- Walks on tiptoes for five stepsmilestone · 36–48mo
- Moves from sitting to standing without using handsmilestone · 33–36mo
- Throws ball up into the air and catches...milestone · 33–36mo
- Makes sounds or vocalizesmilestone · 0–3mo
- Reacts when spokenmilestone · 0–3mo
- Smiles in responsemilestone · 0–3mo
- Laughsmilestone · 0–3mo
- Calms and quiets with caregivermilestone · 0–3mo
- Vocalizes when spokenmilestone · 0–3mo
- Turns to voicemilestone · 6–9mo
- Babbles while playingmilestone · 6–9mo
- Repeats syllablesmilestone · 9–12mo
- Uses gestures to communicatemilestone · 12–15mo
- Uses 2 4 syllable babblemilestone · 12–15mo
- Responds to verbal requestmilestone · 12–15mo
- + 93 more items