UNSW Sydney's Extensive 12-Year Research Findings
The University of New South Wales (UNSW) Sydney conducted a significant 12-year study demonstrating that older adults with stronger cognitive abilities report higher levels of life satisfaction, positive emotions, and health-related quality of life. This research, published in Aging & Mental Health, was led by UNSW’s Centre for Healthy Brain Ageing (CHeBA). Over 1,000 older adults participated in the study, which is one of the most comprehensive to date, examining how cognitive abilities relate to well-being in later life.
Published results indicate that the study assessed participants every two years through cognitive tests, medical and health evaluations, and surveys measuring life satisfaction. They also completed questionnaires on health-related quality of life and measures of depression, anxiety, and personality. Dr. Michael Connors, the lead author, stated, “The study provides older adults a voice in defining what successful ageing means to them.” He emphasised the importance of understanding successful ageing as “not just the absence of disease, but the presence of fulfilment and positive experiences.”
Advanced statistical modelling examined the connections between cognition and wellbeing over time. Results consistently showed that those with higher cognitive scores reported greater life satisfaction and positive emotions. These findings remained stable over the entire 12-year period. According to Dr. Connors, “Results showed that older adults with higher cognitive scores reported greater life satisfaction, more positive emotions, and better health-related quality of life.”
Influence Beyond Cognitive Abilities
Significantly, the study found that wellbeing in older age is influenced by factors beyond cognition. Good physical health and the ability to function independently in daily life were strongly associated with higher life satisfaction and quality of life. Lower levels of anxiety were also linked to better wellbeing. Personality traits played a crucial role, with lower neuroticism and higher conscientiousness correlating with more positive outcomes.
Professor Henry Brodaty AO highlighted the need to promote cognitive health and overall wellbeing as the population ages. He noted, “Future research will aim to explore potential interventions to enhance these aspects.” The study found that the relationship between cognitive abilities and wellbeing held even after accounting for age, sex, physical health, daily functioning, relationship status, depression, anxiety, personality traits, and alcohol use. It also remained consistent after excluding individuals who developed dementia.
