Scientific Research

Our Assessment Methodology

Our IQ test is built on decades of cognitive science research and validated psychometric principles

Scientific Foundation

Our cognitive assessment is designed based on the Cattell-Horn-Carroll (CHC) theory of intelligence, which is the most comprehensive and empirically supported model of human cognitive abilities. This theory identifies multiple broad cognitive abilities that contribute to overall intelligence.

The test incorporates elements inspired by established instruments such as the Wechsler Adult Intelligence Scale (WAIS), Raven's Progressive Matrices, and the Stanford-Binet Intelligence Scales. While our online assessment is not a replacement for clinical evaluation, it provides a reliable estimate of cognitive abilities.

Each question type is designed to measure specific cognitive domains, allowing us to provide a comprehensive profile of your intellectual strengths and areas for potential development.

Question Types & Sources

Our test includes five distinct cognitive domains, each measuring different aspects of intelligence

Pattern Recognition (Matrix)

These questions measure fluid intelligence and abstract reasoning ability. You must identify patterns in visual matrices and determine the missing element.

Based on: Raven's Progressive Matrices (1938)

Numerical Sequences

These questions assess quantitative reasoning and the ability to identify mathematical patterns and relationships in number series.

Based on: WAIS-IV Number Sequencing

Verbal Reasoning

These questions measure crystallized intelligence, vocabulary knowledge, and the ability to understand relationships between concepts.

Based on: WAIS Verbal Comprehension Index

Spatial Reasoning

These questions evaluate your ability to mentally manipulate objects, understand spatial relationships, and visualize transformations.

Based on: WAIS-IV Perceptual Reasoning

Logical Deduction

These questions assess your ability to apply rules, draw valid conclusions from premises, and identify logical fallacies.

Based on: Syllogistic reasoning research

Scoring Methodology

Our scoring algorithm takes into account multiple factors to provide an accurate assessment:

  • Correctness of answers weighted by question difficulty (1-5 scale)
  • Response time efficiency compared to expected completion time
  • Performance across different cognitive domains for balanced assessment
  • Statistical normalization to the standard IQ scale (mean=100, SD=15)

The final IQ score is calculated using deviation IQ methodology, which compares your performance to a normalized distribution. This is the same approach used by all major standardized IQ tests.

Test Validity

  • Questions validated through psychometric analysis
  • Consistent measurement across multiple administrations
  • Correlation with established cognitive assessments

Important Limitations

  • •This is an online screening tool, not a clinical diagnostic instrument
  • •Results may be affected by testing conditions and motivation
  • •For official assessment, consult a licensed psychologist

Scientific References

  • Wechsler, D. (2008). Wechsler Adult Intelligence Scale (WAIS-IV). Pearson.
  • Raven, J. C. (1938). Progressive Matrices. H.K. Lewis & Co.
  • Cattell, R. B. (1963). Theory of fluid and crystallized intelligence. Journal of Educational Psychology.
  • Carroll, J. B. (1993). Human cognitive abilities: A survey of factor-analytic studies. Cambridge University Press.
  • Flynn, J. R. (2007). What Is Intelligence? Cambridge University Press.