Retiring is not a common life stage transition for adults, as it typically occurs later in life and is not a universal experience.

Emerging adulthood is the term used to describe the transitional period between adolescence and adulthood, typically occurring between the ages of 18 and 25.

Starting a family is not a common challenge faced by adults during emerging adulthood, as it is typically associated with later life stages.

Middle adulthood is the term used to describe the period of life between the ages of 40 and 65, and is characterized by various transitions and challenges.

Experiencing a midlife crisis is not a common challenge faced by adults during middle adulthood, as it is a stereotype rather than a universal experience.

Late adulthood is the term used to describe the period of life after the age of 65, and is characterized by various transitions and challenges.

Finding new meaning and purpose in life is not a common challenge faced by adults during late adulthood, as it is a positive aspect of this life stage.

Aging is the term used to describe the process of moving from adulthood to old age, and is characterized by various physical, psychological, and social changes.

Improved eyesight is not a common physical change associated with aging, as it is typically associated with younger age groups.

Cognitive impairment is the term used to describe the process of gradual mental decline associated with aging, and can range from mild to severe.

Improved problem-solving skills is not a common psychological change associated with aging, as it is typically associated with younger age groups.

Disengagement is the term used to describe the process of gradual social withdrawal and isolation associated with aging, and is characterized by a decrease in social activities and interactions.

Improved social skills is not a common social change associated with aging, as it is typically associated with younger age groups.

Retirement transition is the term used to describe the process of preparing for and adjusting to retirement, and involves various financial, emotional, and social changes.

Finding new meaning and purpose in life is not a common challenge faced by adults during retirement transition, as it is a positive aspect of this life stage.