Scientifically-Validated Cognitive Testing for Individuals and Professionals

From personal insights to professional assessments, our cognitive tests are trusted for their accuracy. Individual users get immediate feedback and can opt for detailed reports. Pro users can get bulk solutions for institutional applications, a dedicated dashboard for monitoring results, and advanced data analytics to enhance decision-making.

Explore Your Potential

Free Cognitive Testing with Complimentary Certificates

Assess your cognitive skills with our free tests. Instantly receive a certificate showing your score range or request a more detailed report for personalized insights.

  • Basic: Snapshot of your cognitive profile.
  • Standard: Deeper analysis of your strengths.
  • Premium: Comprehensive report with career and personal recommendations.

Testimonials

"Receiving the detailed report was a game-changer for me. Its precision and relevance to my personal and professional goals were remarkable. This insight is invaluable, and I won't hesitate to recommend your services to my network."


- John, Marketing Specialist

"The cognitive profile report I received was spot-on. It perfectly captured my strengths and areas for development. I'm thoroughly impressed with the level of detail and accuracy."


- Chris, Project Manager

"I was amazed by how the assessment mirrored my own experiences, particularly in verbal skills and mathematical challenges. It's reassuring to see such an accurate reflection of my abilities. Thank you for this valuable insight."


- Taylor, Freelance Writer

"A huge thank you to Matthew and Xavier for their exceptional work on the report. It was comprehensive, detailed, and professionally put together. I appreciate the effort and expertise that went into it."


- Jordan, Research Analyst

"Your prompt responses and kind assistance made the whole process smooth. The report is outstanding in its professionalism and clarity. I’m really satisfied with the outcome and the insights it provided."


- Sam, Entrepreneur

"I'm a lifelong learner, and the insights from your test have been eye-opening. I appreciate how well your assessment catered to my unique learning style. It's never too late to understand oneself better!"


- Eleanor, Retired Educator

"The cognitive assessment provided me with a clear understanding of my strengths. It's boosted my confidence in choosing a career path that aligns with my abilities."


- Noah, High School Student

"Balancing work and study can be challenging, but your accurate and insightful report helped me leverage my cognitive strengths more effectively. I’m now more organized and efficient in both my professional and academic pursuits."


- Mia, Part-time Student and Full-time Employee

"In my role as an Educational Psychologist, it's vital to have reliable tools for assessment. Your services have not only met but exceeded my expectations in terms of depth and accuracy."


- Ava, Educational Psychologist

"The insights from your report have helped me refine my approach to complex problems, enhancing both my creativity and efficiency."


- Ethan, Data Scientist

"I rely heavily on cognitive insights for my work. Your assessments have provided me with invaluable data that has significantly contributed to my research projects."


- Sophia, University Researcher

"Your services have been a valuable addition to my diagnostic tools, offering precise and comprehensive reports."


- Jackson, Clinical Psychologist

Cognitive Tests

Figurative Sequences Test: JCFS
Challenge your problem-solving skills
Numerical Sequences Test: WN
Stimulate your brain with numerical sequences
Inductive Reasoning Test: JCTI
Engage in a series of geometric pattern challenges
Verbal Ability Test: IAW
Assess your vocabulary skills
Vocabulary & Reasoning Test: JCWS
Challenge your verbal sagacity
Verbal & Mathematical Test: JCCES
Highly correlated with SAT, GRE, and WAIS
Verbal & Mathematical Test: JCCES-II
A refined assessment of crystallized intelligence and educational competencies
Verbal Assessment: RACE
Assess your verbal skills

Statistical Tools

Not sure where to start? Try our Z-Score Equating Calculator now!

Latest Articles

A Group-Theoretical Approach to Item Response Theory

Show Abstract ↓

This paper develops a mathematical framework for integrating group-theoretic symmetry constraints into Item Response Theory (IRT) parameter estimation. Group actions on item parameters define algebraic structures that capture latent regularities, thereby reducing the effective dimensionality of the parameter space. Specifically, group actions on item difficulty and discrimination parameters are formalized through permutation matrices, inducing coset decompositions that collapse symmetrically related items into equivalence classes. This symmetry-enforced regularization ensures parameter estimates remain consistent with both empirical data and the underlying algebraic structures. Additionally, the model incorporates data-driven dynamic bounds for discrimination parameters, derived from the empirical distribution of point-biserial correlations, enabling the model to capture item-level variability while maintaining theoretical consistency. While the focus is on the two-parameter logistic (2PL) model, the approach generalizes to more complex models, such as the three-parameter logistic (3PL) and four-parameter logistic (4PL) models, by including additional constraints on guessing and upper asymptote parameters. Future work will address empirical validation, computational scalability, and alternative group-theoretic structures in psychometric modeling.

Theoretical Framework for Bayesian Hierarchical Two-Parameter Logistic Item Response Models

Show Abstract ↓

This paper provides a theoretical formulation of the hierarchical Two-Parameter Logistic (2PL) Item Response Theory (IRT) model within a Bayesian framework. The model introduces hierarchical priors on respondent abilities theta, and informative priors for item discrimination a and difficulty b, allowing for more flexible and realistic modeling of latent traits and item characteristics. To overcome the computational challenges posed by the high-dimensional posterior, we employ Automatic Differentiation Variational Inference (ADVI), which offers a scalable and efficient alternative to traditional Markov Chain Monte Carlo (MCMC) methods. We present a complete derivation of the model's probabilistic structure, including both prior and likelihood functions, and detail the variational inference process central to ADVI. The mathematical foundations are carefully developed, providing a clear and formal account of the inferential methodology. This work focuses on theoretical aspects, offering a comprehensive mathematical exposition without empirical applications or simulation studies.

Advancements in Research on High-IQ Individuals Through Scientific Inquiry

Show Abstract ↓

High intelligence is a pivotal research area, influencing the intellectual development of societies. This treatise explores the nuanced territory of cognitive ability studies. Beginning with a historical evolution from earlier conceptions of intelligence to modern definitions, the manuscript delves into the semantic roots of intelligence, a term derived from the Latin intelligere, which translates to "to understand". Challenges inherent in assessing high levels of intelligence, such as ceiling effects in well-known measures like the Stanford-Binet and WAIS, are discussed. An exploration of neuroimaging uncovers neural underpinnings associated with elevated cognitive abilities. Moreover, the convoluted relationship between genetics and environment in the context of cognitive abilities is examined. The treatise not only addresses salient critiques of IQ measures but also underscores the imperative for sophisticated psychometric instruments tailored for the highly gifted.

About Cogn-IQ

Since its inception in 2010, Cogn-IQ has been a trusted provider of cognitive assessment tools for individuals and professionals alike. Our platform offers a wide array of free, reliable IQ and cognitive potential tests, empowering users to gain insights into their mental abilities. For deeper analysis, we provide affordable, comprehensive individual reports that can be used for personal growth and development.

For clinical professionals, including psychologists and medical doctors, Cogn-IQ offers advanced, paid assessment solutions designed to aid in diagnostic processes and therapeutic planning. We also supply researchers with specialized measurement tools that ensure precision and reliability for studies in cognitive sciences and related fields.

Human resources and recruitment professionals benefit from our tailored assessment services, enabling informed hiring decisions and helping to match candidates with roles that align with their cognitive strengths. Whether you're an individual looking for personal insights or a professional seeking robust cognitive evaluation tools, Cogn-IQ is your partner in cognitive assessment and intelligence measurement.

Our Team

  • Founder & Head of Research

    Xavier

    Founder & Head of Research

  • Assessment Development Enhancer

    Priya

    Assessment Development Enhancer

  • Client Relations Gentleman

    Matthew

    Client Relations Gentleman

  • Educational Content Scribe

    Naomi

    Educational Content Scribe

  • Technical Support Wizard

    Alex

    Dev & Tech Wizard

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