Cognitive reserve.
Level 5 - mechanism / opinion, no new human data
Narrative review and theoretical framework without systematic review methodology or new empirical human data
PubMed 19467352 · doi:10.1016/j.neuropsychologia.2009.03.004
What was done
This narrative review outlines a theoretical model of brain and cognitive reserve, reviewing supporting epidemiologic data in aging and dementia as well as methodological considerations for imaging studies illustrated by the author's prior work.
What was found
The abstract reports no numerical findings, effect sizes, or quantitative data; it provides a conceptual synthesis and discussion of methodological issues.
Why it matters
It provides a foundational theoretical framework for understanding why individuals with similar extents of neuropathology exhibit substantial differences in clinical cognitive outcomes.
Limits
The paper is a narrative overview rather than a systematic review or meta-analysis. No sample sizes, quantitative estimates, or primary datasets are presented in the abstract, and selective review of author-affiliated work may introduce bias.
Cited by
- supports Lifelong learning and high neuroplasticity preserve synaptic connectivity and allow individuals to maintain cognitive functioning even in the presence of physical neurocognitive brain degradation.