Methodology

This test estimates several cognitive abilities commonly studied in psychology.

It evaluates:

• Logical reasoning (pattern recognition)
• Working memory (storing and manipulating information)
• Spatial visualization (mental rotation)
• Verbal and numerical reasoning
• Processing speed (perception and decision-making)

The test does not measure: general knowledge, creativity, emotional intelligence, motivation, or social skills.

The result is an estimate of performance on these tasks — not a clinical diagnosis.

CHC Model (Cattell–Horn–Carroll)

This test is based on the Cattell–Horn–Carroll theory of intelligence — a contemporary hierarchical model describing the structure of cognitive abilities at three levels: general intelligence (g), broad abilities (Gf, Gc, Gv, Gwm, Gs), and narrow abilities measured by individual tasks. The CHC model is the foundation of most modern cognitive tests.

Broad abilities covered

Comparison with clinical tests

Clinical intelligence tests (such as WAIS) are administered individually by a qualified psychologist under controlled conditions and take 60–90 minutes. Our test is completed online, independently, and takes approximately 12 minutes. For this reason, results should be interpreted as indicative, not diagnostic.

Duration: approx. 12 minutes + 90 seconds (processing speed)

Scores are scaled to a standard metric:

Each result includes an estimated confidence interval (±5 points).

The percentile indicates what proportion of test users in a given age group scored lower.

Norms are preliminary and will be updated as data is collected.

Reliability metrics are preliminary and will stabilize as more data is collected.

Test items are developed through an iterative process:

This test is administered online and without supervision.

Results may be influenced by:

• Internet connection and device type
• Distractions in the environment
• Motivation and fatigue level
• Prior experience with similar tests

The test provides an estimate of performance on specific cognitive tasks. It is not a clinical psychological assessment and should not be used for diagnostic purposes, employee selection, or educational decisions.

The test structure is based on the following works:

1. Carroll, J. B. (1993). Human Cognitive Abilities: A Survey of Factor-Analytic Studies. Cambridge University Press.
2. Cattell, R. B. (1963). Theory of fluid and crystallized intelligence. Journal of Educational Psychology, 54(1), 1–22.
3. Horn, J. L., & Cattell, R. B. (1966). Refinement and test of the theory of fluid and crystallized intelligence. Journal of Educational Psychology, 57(5), 253–270.
4. McGrew, K. S. (2009). CHC theory and the human cognitive abilities project. Intelligence, 37(1), 1–10.
5. Deary, I. J. (2012). Intelligence. Annual Review of Psychology, 63, 453–482.