Unidimensional decline models of ageing have been replaced over the past few decades by life-span developmental models that take into account how particular processes and strategies support adaptive ageing.
Changes in social interactions along with Ageing-
The transition may have been sparked in part by the stark contrast between research showing significantly diminished biological, physiological, and cognitive capacity and research indicating that people are generally content in old age and experience relatively high levels of emotional well-being. This purported "paradox" of ageing has recently been resolved through thorough theoretical analysis and empirical research.
Understanding ageing as an adaptation helps us understand adult resilience, wellbeing, and emotional suffering-
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