Milestoneunknown· 5mo–17mo

Rocks from side to side on stomach while lying face down

Rocks from side to side on stomach while lying face down

Unknown

What the research says

Framework evidence being indexed.

Full quotes, source languages, and document links coming soon as we finish the source-evidence indexing pass.

Normative evidence

1 source back this milestone. The bars below show the age range each source covers.

This milestone5mo–17moStanford SHQ0mo–6y012243648607284months
Milestone windowNormative study
The coral bar shows this milestone's typical age window. The bars below show the age coverage of each backing source.
Stanford SHQ →

What mastery looks like

Not yet

Shows no attempt to rocks from side to side on stomach while lying face down

  • Shows no attempt to rocks from side to side on stomach while lying face down
  • No observable behavior matching this milestone
Emerging

Occasionally or inconsistently rocks from side to side on stomach while lying face down

  • Occasionally or inconsistently rocks from side to side on stomach while lying face down
  • Requires significant support or prompting
Developing

Frequently rocks from side to side on stomach while lying face down with some support

  • Frequently rocks from side to side on stomach while lying face down with some support
  • Shows the behavior in familiar contexts
Secure

Consistently rocks from side to side on stomach while lying face down across contexts

  • Consistently rocks from side to side on stomach while lying face down across contexts
  • Performs independently without prompting
Reflexive

Readily rocks from side to side on stomach while lying face down and extends the behavior

  • Readily rocks from side to side on stomach while lying face down and extends the behavior
  • Shows flexibility and adaptation in approach

Activities for this (1)

physical3mo–12mo

Rolling and Reaching

Parent observes floor mobility and early grip milestones: rolling, sitting transitions, standing with support, palmar grasp, and bilateral holding. Covers twenty-two gross motor and manipulation milestones at 3-12mo.

Formal assessments

No matching assessment items indexed yet.

Standardised assessment view

1 instrument measure this construct. The construct page shows how each one approaches it and at what age range.

View as assessment construct →