AI Insight
Large population studies indicate that individuals who score higher on cognitive tests during adolescence and young adulthood show lower rates of dementia development in later life. However, early adult cognitive performance is influenced by multiple factors beyond innate thinking ability, including educational attainment, life experiences, and family environment. This multifactorial nature of test performance makes it challenging to assess whether early cognitive scores can reliably predict future dementia risk.
Why it matters
Understanding the relationship between early cognitive performance and later dementia risk could help identify at-risk individuals earlier and inform preventive interventions. However, the confounding effects of education and environment must be accounted for before such assessments can be used as reliable predictive tools in clinical practice.
Understand the Science
Could the way we think in our 20s offer clues about our risk of dementia decades later? Large population studies suggest that people who perform better on thinking ability tests in adolescence or young adulthood are less likely to develop dementia later in life. However, cognitive performance in early adulthood is shaped by more than thinking ability alone; it can also reflect education, life experiences and family environment. This makes it difficult to determine whether scores on cognitive tests are a reliable indicator of future dementia risk.
Source: Sharper reasoning skills in teen years tied to lower dementia risk later in life