Baby: Infant – Newborn – Toddler
What babies learn in first 3 months

What babies learn in first 3 months

Learning Through the Senses In the first weeks, a baby’s brain is learning to organize a continuous stream of sensory input. Vision is clearest at close range, so a baby may study a caregiver’s face during feeding or cuddling. High-contrast patterns, slowly moving objects, and faces are often easier to notice than small or visually […]

When babies start smiling socially

When babies start smiling socially

What is a social smile? A social smile is a smile that occurs in the context of human interaction. A baby may look toward a caregiver’s face, respond to a familiar voice, or smile during a gentle exchange. The expression may initially be brief or inconsistent, but it represents an important early step in social […]

Caregiver Interaction and Baby Brain Development

Caregiver Interaction and Baby Brain Development

Why Relationships Matter to the Developing Brain During infancy, the brain undergoes rapid growth in synapses, myelination, and functional specialization. Neural circuits are shaped by both intrinsic biological programs and the sensory and social environment. Caregiver interaction is one of the most consistent features of that environment. A baby repeatedly experiences another person’s voice, face, […]

When babies show emotions

When babies show emotions

Emotional expression begins before language Newborns do not need words to communicate an internal state. Crying, facial tension, limb movements, changes in muscle tone, rooting, sucking, gaze aversion, and variations in vocal intensity all provide information. These behaviors are not perfectly specific. A cry may reflect hunger, pain, fatigue, temperature discomfort, a wet diaper, or […]

Object Permanence and Early Thinking

Object Permanence and Early Thinking

What Object Permanence Means Object permanence refers to the understanding that an object or person continues to exist when it cannot currently be seen, heard, or touched. For an infant, this is a major shift from responding primarily to immediate sensory information toward maintaining an internal representation of something that is absent from the current […]

Hand Preference in Babies: What Is Normal

Hand Preference in Babies: What Is Normal

What hand preference means in infancy Hand preference, or laterality, refers to a tendency to use one hand more often or more effectively for a particular task. In older children and adults, this may be obvious across writing, throwing, eating, and other skilled activities. In babies, however, the concept is less fixed. An infant may […]

Memory Development During the First Year

Memory Development During the First Year

What Memory Means in an Infant Memory is not one single ability. It includes several related processes: encoding information, retaining it, and retrieving it later. In infancy, researchers commonly distinguish recognition memory, recall, working memory, and procedural or implicit learning. Recognition memory is the ability to respond differently to something familiar than to something new. […]

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 […]

Balance Development Before Standing and Walking

Balance Development Before Standing and Walking

Balance Begins Before Upright Postures Balance control develops long before a baby pulls to stand. During early infancy, the developing brain and spinal cord gradually learn to coordinate head position, trunk stability, and limb movement against gravity. Tummy time and varied floor positions provide opportunities to strengthen the cervical, thoracic, and abdominal musculature while helping […]

How babies gain muscle control

How babies gain muscle control

Muscle control is a neuromuscular achievement At birth, a baby has muscles, but the neural control of those muscles is immature. Muscle contraction depends on signals traveling from the brain and spinal cord through motor nerves to neuromuscular junctions, where nerves communicate with muscle fibers. In early life, these pathways are still being refined. The […]