What age is considered a mature adult?

In developmental psychology, a mature adult is typically considered to be someone who is in the stage of middle adulthood, which ranges from approximately 40 to 65 years old. This stage is characterized by stability in career and relationships, as well as a sense of personal identity and responsibility. However, it is important to note that maturity is a complex and multifaceted concept that can vary depending on cultural, social, and individual factors.