noun
early childhood; infancy
Refers to the developmental stage from about age 1 to 6, before entering elementary school. Often used in educational, psychological, or medical contexts.
See also: 幼児 (ようじ)
幼児期の経験は人格形成に大きな影響を与える。
Experiences in early childhood have a great influence on personality development.
幼児期に多くの言
Children learn many words in early childhood.
乳児期 is the earlier infancy stage (roughly 0–1 year), whereas 幼児期 covers the toddler and preschool years.
Compound of 幼児 (young child) and 期 (period, stage).