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Subjective age, a measure of how old one feels, appears unidimensional but may be multidimensional. Perceived physical age best predicts life satisfaction and cognitive function, influencing how young individuals feel.

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Area of Science:

  • Gerontology
  • Psychology of Aging
  • Quality of Life Research

Background:

  • Subjective age is linked to quality of life but its construct nature remains unclear.
  • Understanding subjective age is crucial for aging research and well-being prediction.

Purpose of the Study:

  • To determine if subjective age is unidimensional or multidimensional.
  • To investigate the relationship between subjective age and quality of life using a multi-aspect approach.

Main Methods:

  • Analyzed data from 2896 Japanese adults (aged 20-89).
  • Utilized five distinct subjective age measures and quality of life indicators.
  • Employed factor analysis and four indexes for comprehensive analysis.

Main Results:

  • Factor analysis suggested a unidimensional construct for subjective age.
  • Multi-aspect analyses revealed unique predictive features for different measures.
  • Perceived physical age strongly predicted life satisfaction and cognitive function perception.
  • Ideal age predicted life satisfaction in the opposite direction.

Conclusions:

  • While appearing unidimensional, subjective age may possess multidimensional characteristics.
  • Further research with systematic approaches is needed to explore subjective age's multifaceted nature.
  • Developing scales for multiple aspects of subjective age is vital for well-being prediction and cross-cultural comparisons.