Dimensions of the Life Satisfaction Index A: a structural formulation

Area of Science:

• Psychological Measurement
• Gerontology
• Sociology of Aging

Background:

• The Life Satisfaction Index A is a widely used measure in psychological and sociological research.
• Understanding the dimensionality of the Life Satisfaction Index A is crucial for accurate interpretation of research findings.
• Previous research has explored the factor structure of the Life Satisfaction Index A with varying results.

Purpose of the Study:

• To clarify the underlying dimensionality of the Life Satisfaction Index A.
• To propose and test a specific structural equation model for the Life Satisfaction Index A.
• To provide empirical evidence for the factor structure of the Life Satisfaction Index A.

Main Methods:

• A multiple indicator structural equation model was developed.
• The model included 11 items loading on three first-order factors and one second-order factor.
• Data from the 1974 National Council on Aging/Harris survey, "Myths and Realities of Aging in America," was utilized.

Main Results:

• The proposed structural equation model for the Life Satisfaction Index A was empirically supported.
• The model's formulation was consistently replicated across four randomly divided subsamples.
• Evidence suggests a robust second-order factor structure with three first-order factors.

Conclusions:

• The dimensionality of the Life Satisfaction Index A is clarified by the proposed model.
• The findings provide strong empirical support for the structure of the Life Satisfaction Index A.
• This validated structure enhances the reliability and validity of life satisfaction research, particularly in aging populations.