Carstensen · The Gerontologist 2021 · narrative review · n=?

Socioemotional Selectivity Theory: The Role of Perceived Endings in Human Motivation.

Level 5 - mechanism / opinion, no new human data

Narrative review and theoretical overview (award lecture) presenting no new primary empirical data or systematic synthesis.

PubMed 34718558 · doi:10.1093/geront/gnab116 · record verified 2026-08-26

What was done

This paper, based on the 2015 Robert W. Kleemeier Award Lecture, provides a narrative overview of the development and empirical research program of socioemotional selectivity theory (SST), which examines how perceived time horizons (such as aging, severe illness, or geographic relocation) influence human motivation across the lifespan.

What was found

The abstract provides no numerical data, sample sizes, or statistical metrics. It describes the core theoretical model: as perceived time horizons narrow, individuals shift motivation from exploratory goals toward emotionally meaningful goals, leading to changes in social networks, decision preferences, and cognitive processing (specifically the positivity effect).

Why it matters

It outlines a major life-span developmental theory explaining why older adults and individuals facing constrained time horizons prioritize emotional meaning and positive emotional experiences.

Limits

The abstract contains no primary experimental data, statistical effect sizes, or quantitative meta-analyses. As an invited award lecture and narrative summary, it does not follow systematic review methods or address study quality and selection bias across the cited literature.

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