In 2011, Daryl Bem published a paper in a top psychology journal claiming evidence for precognition — the ability to perceive future events. The results were statistically significant (p < .05 across nine experiments) and the scientific community was almost universally skeptical, because the effect sizes were tiny and “significant” …
Mensa. The name conjures images of genius-level intellects gathering to solve the world’s hardest puzzles. In reality, the world’s largest and oldest high-IQ society is more community group than elite think tank — a place where the primary entry requirement is scoring in the top 2% on a standardized intelligence …
You sit down for an IQ assessment. Your palms are sweating, your mind races, and the moment you see the first timed task, your thoughts scatter. You know you can do better than this — but the anxiety won’t let you. If this sounds familiar, you’re not alone. Test anxiety …
Among the hundreds of cognitive tests developed over the past century, few have achieved the global reach of Raven’s Progressive Matrices. Administered in settings from London clinical offices to rural schools in sub-Saharan Africa, the RPM has become the world’s most widely used nonverbal intelligence test. Its elegance lies in …
The bell curve that plots IQ scores is one of the most recognizable images in popular psychology, and one of the most widely misunderstood. It is not a discovered natural law of intelligence; it is a deliberate engineering choice imposed on raw test scores during a process called standardization. Understanding …
You’ve received an IQ test report — for yourself, your child, or a client — and what should be a clean answer is a thicket of numbers, percentiles, confidence intervals, index scores, scaled scores, and qualitative descriptors. This guide walks through what each piece actually means and how a psychometrician …
If you’ve taken the GRE, GMAT, or certain professional certification exams, you may have noticed something odd: the questions seemed to adjust to your level. You weren’t imagining it. These tests use Computerized Adaptive Testing (CAT), a sophisticated approach that tailors each test to the individual test-taker in real time. …
What does research say about IQ in autism? Learn about cognitive profiles in ASD, why traditional IQ tests may be misleading, and how intelligence varies across the autism spectrum.
How does IQ change with age? Explore average IQ scores by age group, when cognitive abilities peak, and what research shows about intelligence across the lifespan.
Does speaking two languages boost intelligence? Explore what research actually shows about bilingualism and cognitive ability — including the bilingual advantage debate and its limitations.
