A–Z Glossary

temperament

Temperament is a child’s individual pattern of responding to novelty, change, stimulation, and other experiences.

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Can emotions shape baby personality

Can emotions shape baby personality

Temperament is not the same as personality When people say a baby has a “personality,” they often mean an early pattern of behavior: easy to soothe, highly alert, shy, intense, calm, or curious. In developmental medicine, this is usually called temperament. Temperament refers to an infant’s typical level of emotional reactivity, self-soothing, attention, activity, and […]

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 […]

Why milestone timing varies

Why milestone timing varies

Milestones are reference points, not deadlines Developmental milestones are specific behaviors or skills that many children can do by a certain age. They may involve gross motor abilities, such as rolling or sitting; fine motor abilities, such as reaching and transferring an object; language and communication, such as babbling or using gestures; cognitive skills, such […]

Social Referencing: Reading a Parent’s Reaction

Social Referencing: Reading a Parent’s Reaction

What Social Referencing Means Social referencing is the process by which an infant or young child uses another person’s emotional expression as information about how to interpret an ambiguous event. In practical terms, a baby notices a parent’s face, vocal tone, body tension, gaze direction, and timing of response, then uses those cues to help […]

Why babies resist changes

Why babies resist changes

Attachment makes change feel risky For a baby, the world is still small and highly dependent on proximity to a trusted adult. The caregiver-baby relationship is not just about comfort; it is the infant’s main source of safety, co-regulation, and meaning. When that familiar person steps away, hands the baby to someone new, or changes […]

Adjusting baby to new situations

Adjusting baby to new situations

Why new situations feel intense for babies A baby’s adjustment to change is shaped by rapid neurologic development, immature self-regulation, and complete dependence on caregivers for safety. Infants can detect patterns in voice, smell, touch, feeding, sleep timing, light, and movement long before they can understand explanations. When those patterns shift, the brain must update […]

Baby frustration behavior explained

Baby frustration behavior explained

What baby frustration means Baby frustration is a distress response that appears when an infant’s need, comfort, or goal is blocked. A hungry baby may cry because feeding has not begun. A tired baby may arch away from a caregiver because the nervous system is overloaded. A 9-month-old may yell when a toy rolls out […]

How babies express frustration

How babies express frustration

Frustration is communication, not misbehavior Frustration in infancy is best understood as an early affective response to a blocked goal or an overwhelming demand. The baby may want milk faster than it is arriving, reach for an object that remains out of range, become unable to settle after stimulation, or protest when a caregiver changes […]

Understanding child behavior patterns

Understanding child behavior patterns

Behavior as developmental communication Child behavior is best understood as an observable output of a developing brain. Executive functions, including inhibitory control, working memory, cognitive flexibility, and planning, mature gradually from early childhood through adolescence. Emotional regulation also develops slowly and depends heavily on co-regulation: the adult’s ability to provide calm, predictable support while the […]

How social interaction changes with age

How social interaction changes with age

Infancy and early childhood: social life begins with attachment At the beginning of life, social interaction is mostly dyadic: the child and caregiver form the first communication system. Smiles, eye contact, vocal turns, and shared attention help the infant learn that other people are predictable and safe. This early pattern is not just emotional; it […]

Why some children struggle to make friends

Why some children struggle to make friends

Friendship begins with repeated practice To understand why some children struggle, it helps to see how children make friends in the first place. Friendship is usually built through repeated small exchanges: noticing another child, joining play, responding to bids for attention, taking turns, and recovering after disagreement. These steps sound simple to adults, but for […]

Sibling rivalry children explained

Sibling rivalry children explained

What sibling rivalry usually means Sibling rivalry is not a diagnosis. It is a relational pattern in which children compete, protest, test limits, or escalate to secure attention, status, or control within the family system. Academic reviews of sibling relationships describe a blend of warmth, conflict, power, and rivalry, and most families see all of […]

Balancing group and solo play

Balancing group and solo play

Why balancing play styles matters Play is not a single skill. In early childhood, it is a cluster of abilities that includes exploration, communication, imitation, problem-solving, and emotional regulation. A child who enjoys alone time may be practicing different skills from a child who thrives in a busy group, but both are learning. That is […]

Flexible vs strict routine children

Flexible vs strict routine children

What flexible and strict routines look like A flexible routine has recurring anchors but does not require every event to happen at an exact time or in an identical way. For example, a child may have a consistent bedtime sequence—washing, changing, reading, and settling—while the start time shifts slightly on weekends or after an appointment. […]