Activity theory suggests that older adults who remain active and engaged in social and intellectual activities are more likely to experience successful aging.

Disengagement theory posits that older adults naturally withdraw from social and intellectual activities as they age, in order to focus on their inner lives and prepare for death.

Continuity theory suggests that older adults who are able to maintain a sense of continuity between their past and present lives are more likely to experience successful aging.

Socioemotional selectivity theory suggests that older adults tend to focus on the quality rather than the quantity of their relationships, prioritizing close and meaningful connections.

Positive aging theory suggests that older adults who maintain a positive outlook on life and a sense of purpose are more likely to experience successful aging.

The selective optimization with compensation model suggests that older adults adapt to the challenges of aging by focusing on their strengths and compensating for their weaknesses.

Control theory suggests that older adults who maintain a sense of control over their lives are more likely to experience successful aging.

The theory of gerotranscendence suggests that the self in old age becomes more fluid and flexible, allowing for a greater sense of wisdom and compassion.

Spiritual aging theory suggests that older adults who maintain a sense of spirituality or religiosity are more likely to experience successful aging.

The theory of successful aging as a journey suggests that the primary goal of older adults is to find meaning and purpose in their lives.

The health promotion model suggests that older adults who maintain a healthy lifestyle are more likely to experience successful aging.

The theory of successful aging as a social process suggests that all of the above factors are key in promoting successful aging.

Generativity theory suggests that older adults who maintain a sense of generativity, or the desire to contribute to the well-being of future generations, are more likely to experience successful aging.

The theory of successful aging as a multidimensional process suggests that all of the above dimensions are key in promoting successful aging.

Resilience theory suggests that older adults who maintain a sense of resilience, or the ability to bounce back from adversity, are more likely to experience successful aging.