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.

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, …

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 …

Dec 7, 2025 · New research suggests the human brain has five distinct ages, and it may not reach adulthood until a person's early 30s.

When does adulthood actually start? Probably later than you think. According to a recent study published in the journal Nature Communications, when it comes to brain functionality, …

Explore the 3 stages of adulthood: early, middle, and late. Learn the key characteristics of each phase and how they shape our lives.

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 …

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

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 …

Adulthood in psychology refers to the stage of life that follows adolescence and continues until old age. This phase is characterized by significant psychological, emotional, and social …