Retrospective life span analysis: a method for studying extreme old age

Area of Science:

• Gerontology
• Sociology
• Demography

Background:

• The aging population represents a rapidly increasing segment of modern societies.
• Understanding the life histories and circumstances of older individuals is crucial for demographic and sociological research.

Purpose of the Study:

• To gather information on individuals born in the last century.
• To explore the life histories and present circumstances of an eligible age cohort in Toowong, Brisbane.
• To identify and discuss sources of bias in interview-based research with this demographic.

Main Methods:

• A doorknock survey identified 340 eligible individuals in Toowong, Brisbane.
• Tape-recorded interviews were conducted with 204 individuals, exploring their life histories.
• Interview data were transcribed and coded for computer analysis of structural and temporal dimensions.

Main Results:

• Data were collected from 204 individuals born last century.
• The study identified potential biases stemming from variable interview situations.
• Interactions between respondents and interviewers were noted as a source of bias.

Conclusions:

• Further research on the aging population is recommended using similar methodologies.
• Awareness of interview-related biases is essential for accurate demographic and life history research.
• The study provides insights into the challenges of researching long-lived populations.