Knowledge Base
In-depth explorations of how cognitive assessments work, what they measure, and where their limitations lie. Written for curious, informed readers.
Behind the familiar concept of an "IQ score" lies a structured methodology rooted in statistics, developmental psychology, and decades of iterative research. This article unpacks how tests are designed, how scores are calculated, and what the resulting number actually represents.
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Intelligence isn't one thing. From Spearman's g-factor to Gardner's multiple intelligences, the science of cognitive ability is richer and more contested than most people realize. This article navigates the major theoretical frameworks with care.
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IQ tests have faced significant scrutiny from researchers over the decades. This article examines the well-documented limitations — from cultural bias to predictive validity gaps — with fairness to both critics and defenders of the tools.
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