What is the defined age range for middle adulthood?

Middle adulthood is typically defined as the age range from 40 to 65 years. This phase of life is characterized by a variety of physical, psychological, and social changes as individuals transition from early to late adulthood. During this stage, people often experience life events such as career advancements, parenting challenges, and shifts in relationships, as well as increased focus on personal goals and legacy.

Understanding this age range is important for comprehending the stages of human development, as well as recognizing the specific health and social issues that may arise during this time. The other age ranges provided do not align with the widely accepted definitions of middle adulthood, as they refer to earlier or later stages in the lifespan.