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Cognitive reserve can impact trajectories in ageing: a longitudinal study
Sonia Montemurro1, Raffaella Ida Rumiati2, Veronica Pucci3,4
1Department of Philosophy, Sociology, Education and Applied Psychology (FISPPA), University of Padua, Padua, Italy. sonia.montemurro@unipd.it.
Aging Clinical and Experimental Research
|March 17, 2025
Summary
Cognitive Reserve (CR) significantly impacts cognitive decline trajectories in aging. High CR individuals maintain cognitive function longer, showing a more gradual decline compared to those with low CR.
Area of Science:
- Neuroscience
- Gerontology
- Cognitive Psychology
Background:
- Cognitive decline in aging is not linear, with varying rates of progression.
- Cognitive Reserve (CR) is hypothesized to buffer against cognitive deterioration.
- Understanding factors influencing cognitive trajectories is crucial for aging populations.
Purpose of the Study:
- To investigate the longitudinal impact of Cognitive Reserve (CR) on cognitive performance over time.
- To compare cognitive trajectories between individuals with high CR and low CR.
- To determine if CR influences the rate of cognitive decline in older adults.
Main Methods:
- Longitudinal study of 117 individuals referred for cognitive assessment.
- CR estimated based on education and occupational complexity.
- Cognitive performance assessed at three time points over approximately 3 years.
Main Results:
- A general decline in global cognitive performance was observed over time, particularly between the second and third assessments.
- Individuals with high CR demonstrated greater baseline cognitive efficiency and maintained a more stable cognitive state.
- Significant differences in cognitive decline emerged between high and low CR groups from the second assessment onwards, with high CR individuals preserving their cognitive profile.
Conclusions:
- Cognitive Reserve significantly shapes cognitive decline trajectories in aging.
- High CR is associated with sustained cognitive functioning and a more gradual decline, even in the presence of neurocognitive disorders.
- Interventions aimed at enhancing CR may be beneficial for mitigating accelerated cognitive deterioration in older adults.
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