A–Z Glossary

Developmental Asymmetry

Infant movement asymmetry is a persistent difference in how a baby moves or uses one side of the body.

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Core Strength and Posture Development

Core Strength and Posture Development

What Core Strength Means in Infancy In infancy, core strength refers to the coordinated activity of muscles and connective tissues around the trunk, pelvis, spine, and shoulder girdle. It is not simply the ability to produce force. Effective postural control requires anticipatory and reactive adjustments: the baby stabilizes the trunk while moving the head, reaching […]

Using Both Sides of the Body During Baby Development

Using Both Sides of the Body During Baby Development

What bilateral coordination means Bilateral coordination is the ability to use the two sides of the body together, either in similar ways or in complementary roles. A baby may stabilize a soft block with one hand while exploring it with the other, bring both hands together at the chest, or shift weight between the arms […]

How to track baby milestones monthly

How to track baby milestones monthly

Start with an age-appropriate framework Begin with a milestone checklist designed for your baby’s current age. The CDC’s Learn the Signs. Act Early. resources organize milestones by age and provide checklists that families can review and discuss with clinicians. Cleveland Clinic also describes common month-by-month patterns across motor, language, social-emotional, and cognitive domains. These sources […]

Early vs late milestones explained

Early vs late milestones explained

What early and late milestones actually mean Milestones describe functional abilities in several domains: gross motor skills, fine motor skills, language and communication, cognitive or problem-solving abilities, and social-emotional interaction. Examples include holding the head steady, reaching for an object, responding to sounds, smiling socially, making consonant sounds, or moving from one position to another. […]

Activities to encourage baby milestones

Activities to encourage baby milestones

Start With Responsive Interaction The foundation of infant learning is a responsive relationship: the caregiver notices the baby’s signals and responds in a timely, warm, and predictable way. Hold your baby close, make eye contact when they are receptive, and imitate their facial expressions or vocalizations. When the baby coos, pause and answer as though […]

What if baby skips milestones

What if baby skips milestones

What it means to skip a milestone Parents often use “skip” to describe several different patterns. A baby may acquire a skill later than expected, develop it in an unusual sequence, or appear to move directly to a more advanced skill without a caregiver noticing the earlier one. For example, some infants do not spend […]

Sitting Balance Before Independent Sitting

Sitting Balance Before Independent Sitting

What Sitting Balance Means Before Sitting Alone Sitting balance is the ability to keep the body’s center of mass sufficiently controlled over the base of support while the head, trunk, and limbs move. It is not simply a matter of having strong abdominal muscles. The brain must integrate vestibular information about orientation and movement, visual […]

Banging Objects Together During Exploration

Banging Objects Together During Exploration

Why Banging Is Meaningful Banging objects together during infancy is often a normal expression of sensorimotor exploration. A baby is not only making noise; they are gathering information through vision, touch, proprioception, hearing, and movement. Each strike gives rapid feedback: the object feels hard or soft, the sound is sharp or muted, the surface resists […]

When babies transfer objects from hand to hand

When babies transfer objects from hand to hand

What hand-to-hand transfer means Hand-to-hand transfer occurs when a baby moves an object held in one hand into the other hand. The transfer may happen directly across the midline, or the baby may briefly bring the object to the mouth, chest, or lap before the opposite hand takes hold. Early attempts can look awkward: the […]

Tummy time activities ideas

Tummy time activities ideas

Why tummy time matters Prone play gives an infant opportunities to work against gravity. During tummy time, the baby gradually develops cervical extension, scapular stability, upper-extremity weight bearing, and activation of the trunk and hip musculature. These foundations support later skills such as rolling, sitting, crawling, and varied floor movement. Tummy time also gives the […]

Floor Mirror Play for Babies

Floor Mirror Play for Babies

Why a Floor Mirror Can Be So Engaging For young babies, a mirror offers high-contrast facial features, motion that changes immediately, and an opportunity to see a caregiver’s expression beside their own reflected image. These are naturally compelling inputs for the developing visual and social-attention systems. When your baby kicks, turns their head, opens their […]