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Alzheimer's Disease: Overview01:26

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Alzheimer's Disease (AD) is a continually advancing neurodegenerative disorder, distinguished by escalating memory loss, cognitive dysfunction, and dementia. The disease unfolds in three stages: preclinical, mild cognitive impairment (MCI), and dementia. Its onset is insidious, and the progression gradual, with the cause not well explained by other disorders.
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Cognitive development continues throughout adulthood, undergoing significant shifts across early, middle, and late stages. Individual transition occurs from adolescent idealism to pragmatic and adaptable thinking in early adulthood. During this period, individuals learn to integrate personal beliefs with the recognition that other perspectives are equally valid. Exposure to the complexities of modern society, diverse experiences, and higher education contribute to this adaptive thought process,...
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Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter...
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During adolescence, individuals experience significant cognitive development that enhances their understanding of others' emotions and thoughts, known as cognitive empathy. This period is marked by an increased ability to adapt to others' perspectives and a more nuanced understanding of others' mental states, a skill that is foundational for social problem-solving and conflict avoidance. The development of cognitive empathy relies heavily on the theory of mind — the...
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Negative symptoms of schizophrenia indicate a reduction or absence of typical behaviors and emotional responses found in healthy individuals, while positive symptoms reflect an excess or distortion of normal functioning.
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  11. Positive Childhood Experiences, Cognition, And Biomarkers Of Alzheimer's Disease.
  1. Home
  3. Research Domains
  5. History, Heritage And Archaeology
  7. Historical Studies
  9. North American History
  11. Positive Childhood Experiences, Cognition, And Biomarkers Of Alzheimer's Disease.

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Positive Childhood Experiences, Cognition, and Biomarkers of Alzheimer's Disease.

Joshua H Owens1, Charles C Windon2, Dan Mungas3

  • 1Department of Clinical and Health Psychology, University of Florida, 1225 Center Dr, Gainesville, FL 32603, USA.

International Journal of Environmental Research and Public Health
|April 26, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Positive childhood experiences (PCEs) are linked to better late-life memory. These benefits appear to be driven by increased educational attainment, not direct effects on Alzheimer's biomarkers.

Keywords:
MRI biomarkersamyloidchildhood experiencescognition

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Area of Science:

  • Neuroscience
  • Psychology
  • Public Health

Background:

  • The impact of positive childhood experiences (PCEs) on cognitive aging and Alzheimer's Disease (AD) biomarkers remains unclear.
  • Understanding these associations is crucial for developing early-life interventions to promote lifelong brain health.

Purpose of the Study:

  • To investigate the relationship between PCEs and cognitive trajectories in late life.
  • To explore the mediating role of education in the PCEs-cognition association.
  • To examine the association of PCEs with neuroimaging markers of AD, including MRI and amyloid PET.

Main Methods:

  • Analysis of data from the KHANDLE and STAR studies, including 2,727 diverse participants.
  • Utilized structural equation modeling (SEM) to assess direct and indirect effects of PCEs on episodic memory.
diverse populations
social determinants
  • Employed linear regressions to examine associations between PCEs and brain imaging outcomes (MRI, amyloid PET).

    • Main Results:

    • PCEs showed a positive association with both the level and change in episodic memory over time.
    • Educational attainment significantly mediated the relationship between PCEs and episodic memory.
    • No significant associations were found between PCEs and hippocampal volume or amyloid burden across groups.

    Conclusions:

    • PCEs positively influence late-life episodic memory, primarily by fostering higher educational attainment.
    • The findings suggest that early life experiences can have long-term cognitive benefits through psychosocial pathways.
    • PCEs do not appear to directly impact core Alzheimer's Disease neuropathology in this cohort.