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  1. Adulthood | Development, Aging & Maturity | Britannica

    Adulthood, the period in the human lifespan in which full physical and intellectual maturity have been attained. Adulthood is commonly thought of as beginning at age 20 or 21 years.

  2. Adulthood - University of Central Florida Pressbooks

    By the time we reach early adulthood (20 to early 40s), our physical maturation is complete, although our height and weight may increase slightly. In young adulthood, our physical abilities …

  3. Adult development - Wikipedia

    The concept of adulthood has legal and socio-cultural definitions. The legal definition [4] of an adult is a person who is fully grown or developed. This is referred to as the age of majority, …

  4. Adulthood | Introduction to Psychology - Lumen Learning

    By the time we reach early adulthood (20 to early 40s), our physical maturation is complete, although our height and weight may increase slightly. In young adulthood, our physical abilities …

  5. What Makes Someone an Adult? - Psychology Today

    Nov 30, 2023 · Research shows that adulthood is more than the socio-demographic labels of employee, spouse, and parent—it is a rich, dynamic, and rewarding phase of life defined by …

  6. Adult Development Stages and Cognitive Changes in Later Life

    Mar 9, 2025 · Adult development involves psychological, cognitive, and social transformations, characterized by distinct stages such as early adulthood, midlife, and late adulthood, …

  7. Adulthood: Embracing Responsibilities and Growth • Social Work …

    May 7, 2025 · Explore adulthood's journey: physical & psychological growth, career, relationships, health, parenting, legacy, and creating a meaningful impact.

  8. APA Dictionary of Psychology

    Nov 15, 2023 · n. the period of human development in which full physical growth and maturity have been achieved and certain biological, cognitive, social, personality, and other changes …

  9. ADULTHOOD Definition & Meaning - Merriam-Webster

    from Latin adultus "having grown up," from adolescere "to grow up" — related to adolescence. : fully developed and mature. : a person who has reached an age specified by law compare …

  10. What Does “Adulthood” Really Mean? - Hopkins School

    Feb 10, 2023 · The Oxford English Dictionary defines adulthood as “the state or condition of being fully grown or mature,” but what does that really mean? Across the world, the point at which …