GLOBAL BRAIN INSTITUTE
IQ research . Assessment
IQTestFree.io [IQ Test] is the official platform for GBI IQ Test, powered by the Global Brain Institute (GBI). We are a team of dedicated professionals committed to providing free, reliable, and scientifically grounded online IQ tests. Our mission is to make cognitive assessment accessible to everyone, offering a transparent and user-friendly platform to explore intellectual potential without cost or complexity.
Our team combines expertise in psychology, data analysis, and content creation to deliver a trusted experience. Led by licensed psychologists and supported by skilled writers and analysts, we ensure our tests and content meet the highest standards of scientific integrity and accessibility.
Global Brain Institute (GBI) is a pioneering research organization dedicated to advancing cognitive science, educational assessment, and productivity tools. Through our GBI Intelligence Research Lab, we develop innovative, scientifically validated solutions to empower individuals in understanding their intellectual and organizational capabilities. Our portfolio includes free, accessible tools such as IQTestFree.io for cognitive assessment. Rooted in advanced methodologies like psychometrics and computational standards (e.g., Rasch model, ISO 8601), GBI ensures accuracy, transparency, and accessibility, helping users worldwide achieve their personal and professional goals.
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We aim to provide a convenient, transparent, and scientifically valid IQ testing experience. By offering free tests without hidden fees, we make cognitive assessment accessible to everyone, anywhere, anytime. Our tests and content are designed to be intuitive, reliable, and aligned with established psychological principles.
Our IQ tests are built on well-established psychometric frameworks, such as Raven’s Progressive Matrices and Wechsler scales, adapted for online use. Each test is standardized using a diverse sample of over 10,000 participants to ensure statistical reliability (Cronbach’s alpha > 0.85). Our methodology is regularly reviewed by our team of experts to reflect the latest advancements in cognitive psychology. For more details, visit our Methodology page.
Disclaimer: Our IQ tests and content are designed for informational and educational purposes only. They do not replace professional psychological evaluations. For a comprehensive assessment, consult a licensed psychologist.
We are dedicated to maintaining the highest standards of quality, accuracy, and accessibility. Every test and article is reviewed by our expert team to ensure it meets scientific and ethical standards. We also regularly update our content to reflect the latest research in cognitive psychology, as endorsed by organizations like the American Psychological Association (APA).
Have questions or feedback? Reach out to us at [email protected]. We’re here to help you on your journey to understanding your cognitive potential.
Last Updated: October 2025
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