Socioemotional Selectivity Theory with Dynamic Integration Theory Abstract approved:

In this study, we contrasted socioemotional selectivity theory (SST; Carstensen, 2006) with dynamic integration theory (DIT; Labouvie-Vief, 2003) using trajectories of quantitative and qualitative social support in later life. SST is a lifespan theory of motivational development (Carstensen, Isaacowitz, & Charles, 1999). There is a normative decline in social support networks in later life. In other words, individuals who perceive the limitation on time left for their future are likely to decrease the quantitative social support and compensate for this decrease by improving qualitative social support with emotionally meaningful social partners. The theory also postulates that age is the primary proxy for perceived limitation of individuals ’ lives (Carstensen, Fung, & Charles, 2003). Further, self-reported health and functional status are factors that affect older adults ’ perception of limitation of time left in their lives (Carstensen, 2006). In contrast, DIT is a neo-Piagetian theory that emphasizes the presence of individual differences in quantitative and qualitative social support in later life depending on individuals ’ levels of cognitive resources that are associated wit