All Posts by

Nuno Freitas, Ph.D.

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Environmental and Socioeconomic Influences on Cognition

Air Pollution and Your Brain: The Cognitive Costs You Don’t See

We worry about air pollution’s effects on our lungs and hearts. But a growing body of research reveals an even more alarming target: the brain. From children’s developing intelligence to older adults’ cognitive decline, air quality affects cognition in ways we’re only beginning to understand. Key Takeaway: Chronic exposure to …

Cognitive Aging and Decline

COVID Brain Fog: What Research Says About Long-Term Cognitive Effects

Three years after the initial pandemic wave, “brain fog” remains one of the most commonly reported long COVID symptoms. Patients describe difficulty concentrating, word-finding problems, slowed thinking, and memory lapses — complaints that are vague enough to be dismissed but consistent enough to demand scientific attention. Research has now moved …

Everyday Physical Activity and Cognitive Health
Cognitive Abilities and Intelligence

The Link Between Physical Activity and Cognitive Health

Recent research highlights how everyday physical activity can benefit cognitive health. A study by Hakun et al. (2024) examined the short-term effects of regular physical activity on mental processing speed and working memory. Using real-time assessments, the study provides new insights into how light and moderate physical activities can promote …

Distinct Genetic and Environmental Origins of Hierarchical Cognitive Abilities in Adult Humans
Genetics and Cognitive Abilities

Distinct Genetic and Environmental Origins of Hierarchical Cognitive Abilities in Adult Humans

Understanding how genetic and environmental influences shape cognitive abilities remains a cornerstone of psychological research. Jiang et al. (2024) present an important study that examines these influences through a structured twin-based model. This research provides insight into how basic and higher-order cognitive functions are differentially affected by genetic inheritance and …