Module 1: Developmental Foundations I (Birth-3 Years)

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What principles shape developmental trajectory? Briefly describe each.

Continuous + sequential: Skills build on earlier skills

What are the principles that shape developmental trajectory?

Continuous and sequential; simple to complex; cephalocaudal; proximodistal; maturation and experience; individual rate.

Continuous and sequential

Skills build on earlier skills; the sequence is generally predictable, but timing varies.

Simple to complex

General whole-body responses become increasingly differentiated, coordinated, and purposeful.

Cephalocaudal

Development progresses from head to toe; head control precedes greater trunk and lower-body control.

Proximodistal

Development progresses from the center outward; trunk and shoulder stability support precise hand and finger movements.

Maturation and experience

Biological readiness and opportunities for experience and practice both shape development.

Individual rate

Children develop at different speeds within a range of expected variation.

Why does prone experience matter?

Strengthens head and trunk muscles, develops antigravity control, supports weight-bearing, and prepares children for rolling, sitting, crawling, and standing.

What are the gross motor and postural control anchors from birth to 3 years?

Head control, prone support, rolling, sitting, crawling or creeping, pulling to stand, and walking.

What are the fine motor and hand development anchors from birth to 3 years?

Hands to midline, early swiping and reaching, reaching and grasping, object transfer, voluntary release, pincer grasp, and bilateral manipulation.

What are the feeding and mealtime development anchors from birth to 3 years?

Supported feeding, hands to bottle, finger feeding, cup or straw use, spoon attempts, and increasingly independent mealtime participation.

What are the developmental characteristics at 0–3 months?

Gross motor: predominantly flexed posture, emerging head control, brief antigravity effort. Hands: opening more often, moving to midline, early swiping. Occupations: feeding, co-regulation, faces and voices, early sensory exploration.

What are the developmental characteristics at 4–6 months?

Gross motor: stable head control, prone forearm or hand support, rolling emerges. Hands: purposeful reaching and grasping, increased midline and bilateral play. Occupations: sustained play, visual exploration, social engagement.

What are the developmental characteristics at 7–9 months?

Gross motor: independent sitting develops, transitions and crawling or creeping emerge. Hands: object transfer, emerging pincer grasp, more controlled release. Occupations: finger feeding, object exploration, mobility toward people and things.

What are the developmental characteristics at 10–12 months?

Gross motor: pulling to stand, cruising, rapid floor mobility, possible first steps. Hands: refining pincer grasp, putting objects in containers, increased bilateral use. Occupations: choice-making, functional play, cup and finger feeding, intentional communication.

What are the developmental characteristics at 12–15 months?

Gross motor: independent walking may emerge and transitions become more efficient. Hands: neat pincer grasp, releasing objects into containers, purposeful two-hand use. Occupations: finger feeding, holding a cup and taking sips, imitating familiar actions.

What are the developmental characteristics at 15–18 months?

Gross motor: more stable walking, climbing and supported stair use emerge. Hands: stacking several cubes, assisting with both hands, emerging scribbling. Occupations: scooping with a spoon, straw use, increased mealtime participation.

What are the developmental characteristics at 18–24 months?

Gross motor: faster gait, climbing, early running and jumping foundations. Hands: coordinated bilateral roles, purposeful object placement and combination. Occupations: functional play, early pretend play, imitation, desire for independence.

What are the developmental characteristics at 26–36 months?

Gross motor: running, jumping, climbing, improved stair negotiation. Hands: building, scribbling, turning, stabilizing materials, using tools. Occupations: feeding, helping with dressing, pretend play, communication, following routines.

What does cephalocaudal mean?

Development from head to toe.

What does proximodistal mean?

Development from the center of the body outward.

What does simple to complex mean?

Movement develops from general responses to more precise and purposeful actions.

What does continuous and sequential development mean?

Skills build on previously acquired skills in a generally predictable order.

What does maturation and experience mean?

Development depends on both biological readiness and practice or opportunity.

What does individual rate mean?

Children acquire developmental skills at different speeds.

How does postural control support occupational performance?

Postural stability supports mobility, exploration, hand use, play, feeding, dressing, and communication.