Only Child

An only child is a person with no siblings, either biological or adopted. In a family with multiple offspring, first-borns, may be briefly considered only children and have a similar early family environment, but the term only child is generally applied only to those individuals who never have siblings. An only child, however, may have half-siblings or step-siblings who come along considerably late (after they reach their teens) and still be considered an only child. Children with much older or younger siblings (generally ten or more years) may also have a similar family environment to only children.