The Mediterranean diet has been linked to lower rates of heart disease, diabetes, and cancer. But an expanding body of research suggests its benefits extend above the neck as well. Can what you eat actually make your brain work better? Key Takeaway: The Mediterranean diet — rich in fish, olive …
The Science of Why Some Kids Learn Faster Than Others
Every parent and teacher notices it: some children seem to absorb new concepts effortlessly, while others need considerably more time and repetition. What’s happening underneath these visible differences? The science points to a fascinating interplay of cognitive mechanisms — and some of the answers are surprisingly counterintuitive. Key Takeaway: Learning …
Does Exercise Boost Brain Power? What Neuroscience Actually Says
From Silicon Valley executives swearing by morning runs to schools adding PE to boost test scores, the idea that exercise makes you smarter has become almost gospel. But what does the neuroscience actually show? The answer is encouraging — but more nuanced than the headlines suggest. Key Takeaway: Regular aerobic …
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 …
Sex Differences in Cognitive Abilities: What the Data Actually Shows
Few topics in psychology generate more heat and less light than sex differences in cognitive abilities. Claims range from “men and women are cognitively identical” to “there are fundamental, biologically determined differences that explain occupational disparities.” The data support neither extreme. Here is what large-scale research actually shows — including …
Premature Birth and IQ: What Research Says About Long-Term Cognitive Outcomes
Approximately 10% of babies worldwide are born prematurely — before 37 weeks of gestation. For parents of preterm infants, particularly those born very early, a pressing question is: how will prematurity affect my child’s cognitive development? Research spanning decades and tens of thousands of preterm-born individuals now provides a clear, …
What Does an IQ of 130, 140, or 150 Actually Mean?
If you’ve received a score of 130, 140, or 150 on an IQ test — or if you’re simply curious about what these numbers represent — you’ve likely found that the internet offers more mythology than explanation. These scores place individuals well above average, but what that means practically, statistically, …
WAIS-IV vs. WAIS-V: What Changed and Why It Matters for Your IQ Score
The Wechsler Adult Intelligence Scale is the most widely used IQ test in the world. When Pearson released the WAIS-V in 2024 — the first major revision since the WAIS-IV appeared in 2008 — it introduced significant structural changes that affect how cognitive ability is measured, scored, and interpreted. Whether …
Do IQ Tests Measure What They Claim? Common Criticisms Answered
IQ tests are among the most scrutinized instruments in all of psychology. Critics argue they are culturally biased, too narrow to capture real intelligence, and used to justify inequality. Defenders argue they are the most rigorously validated psychological measures in existence. Both camps have valid points — and understanding where …
How Your Diet During Pregnancy Affects Your Baby’s Brain Development
The nine months of pregnancy represent the most rapid and consequential period of brain development in human life. By birth, a baby’s brain contains roughly 100 billion neurons, nearly all of which were produced during gestation. The nutritional environment during this window has lasting effects on the architecture, connectivity, and …