Permanence
Which ICF domain does Permanence map to in early childhood?
In the ICF, permanence (object and person permanence) in early childhood maps primarily to the Activities and Participation component, Chapter d1 — Learning and applying knowledge (basic learning through objects, roughly d110–d137). It is supported by Body Functions codes for intellectual (b117), attention (b140) and memory (b144) functions, reflecting the ICF practice of describing a developmental construct both as an underlying capacity and as a real-world learning activity. Permanence is best coded as a cognitive learning activity qualified by relevant mental-function codes rather than as a single discrete ICF item.
Object permanence — knowing a hidden thing still exists — is a foundational cognitive milestone, and in the ICF it maps cleanly to a specific functioning domain.
In short
In the International Classification of Functioning, Disability and Health (ICF), the emerging capacity for permanence (object and person permanence) in early childhood maps to the Activities and Participation component, Chapter d1 — Learning and applying knowledge, and more specifically to the basic learning codes covering acquiring knowledge through manipulating objects and learning to act in relation to the persistence of objects (around d110–d137). It also draws on Body Functions under b117 (intellectual functions) and b140 (attention functions), since permanence rests on early memory and attentional substrate. Permanence is therefore best understood as a cognitive functioning construct expressed through learning activities, not a single discrete code.The ICF mapping in detail
Object permanence — the understanding that objects and people continue to exist when out of sight — is a Piagetian sensorimotor achievement typically consolidating across roughly 8–12 months. The ICF, and its child-and-youth derivative concepts (ICF-CY, now integrated into the main classification), do not contain a literal code labelled "permanence". Instead, the construct is operationalised across two complementary components:- Activities and Participation (d) — d1 Learning and applying knowledge. Early permanence behaviours (searching for a hidden toy, anticipating a reappearing caregiver) are observable learning activities. They sit within purposeful sensory experience (d110–d129) and basic learning through objects (d130–d137), where the child learns that the world is stable and predictable.
- Body Functions (b) — global and specific mental functions. The underlying capacities are captured by b117 intellectual functions, b140 attention functions, and the developing b144 memory functions that allow a representation to be held when a stimulus is no longer present.
This dual mapping reflects an important ICF principle: a developmental construct is described both as a capacity/function (Body Functions) and as a performance in real environments (Activities and Participation). For research coding in early childhood, permanence is most defensibly entered as a d1 learning-and-applying-knowledge activity, qualified by relevant b1 mental function codes.
Why this matters for measurement
Framing permanence within ICF rather than a single test score lets clinicians and researchers describe both the child's intrinsic capacity and how environment and support shape its expression — keeping the focus on functioning and participation rather than deficit.The Pinnacle way
This is general classification information, not a diagnosis — a clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care, never from an app or form. Our [child development](/) framework aligns cognitive constructs such as permanence to ICF domains, and where early cognitive or communication support is indicated we may draw on speech therapy and structured developmental input.Trusted sources
WHO International Classification of Functioning, Disability and Health (ICF) browser for component and chapter definitions; WHO guidance on functioning and disability classification; CDC and AAP/HealthyChildren milestone guidance describing the typical emergence of object permanence in the first year.Next step — If you are mapping early cognitive constructs to ICF for assessment or research, partner with Pinnacle Blooms Network to align measurement with clinician-administered developmental evaluation.
What to watch
Whether the child searches for a hidden toy, anticipates a reappearing caregiver, and holds a representation of an absent object — emerging consolidation across roughly 8–12 months — observed as a d1 learning activity rather than a single test result.
Try this at home
Play gentle peekaboo and hide-and-find games with a favourite toy under a cloth; pausing for the child to search supports the early memory and attention that underpin permanence.
Trusted sources
Developed by SETU Consortium · Pinnacle Blooms Network · Last reviewed 2026-06-10 · reviewed every 365 days
This is general information, not a diagnosis. A clinical AbilityScore® and any diagnosis are formed only at a Pinnacle Blooms Network centre, under qualified clinician care.
Frequently asked
Is there a single ICF code for object permanence?
No. The ICF has no literal code labelled 'permanence'. The construct is best mapped to Activities and Participation Chapter d1 (Learning and applying knowledge), particularly basic learning through objects (around d110–d137), and qualified by Body Functions codes for intellectual, attention and memory functions.
Why is permanence coded under both Body Functions and Activities?
The ICF deliberately separates intrinsic capacity (Body Functions such as b117 intellectual and b144 memory functions) from real-world performance (Activities and Participation). Permanence is an underlying mental capacity expressed through observable learning activities, so a complete description uses both components.
At what age does object permanence typically emerge?
Object permanence usually develops and consolidates across roughly 8 to 12 months in typical development, following the Piagetian sensorimotor sequence. Exact timing varies; mapping it to ICF describes functioning rather than fixing a developmental verdict.