Key evidence & numbers
| Evidence | Context |
|---|---|
| No universal accuracy percentage | the testing guidelines require evidence about the actual assessment and its intended use, not the delivery medium alone. Guidelines |
| Repeatability is not enough | getting a similar result again does not by itself establish valid IQ measurement. Reliability and validity are separate requirements. Guidelines |
| Practice can matter | a meta-analysis found that repeated cognitive testing can raise scores. An improved retest result does not automatically show a general change in ability. Meta-analysis |
What affects it?
Relevant evidence includes the reference sample, language, score uncertainty and repeat-testing procedure. Familiarity with the items can complicate retest interpretation. Guidelines, retest meta-analysis
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IQ-style test
Test yourself: IQ-style tasks. Treat this as an exploration of task performance; we have not established that its estimate matches a professionally administered IQ assessment.
Common questions
Does a longer test guarantee accuracy?
Length alone is not validation. Look for published evidence about scoring, norms and the intended interpretation.
Does a similar score on several websites prove my IQ?
Agreement can be interesting, but the tests may share methods or weaknesses. Each interpretation still needs evidence.
Can I use this result for a formal application?
Check the application's accepted assessments. A Helibrain result is not a formal assessment certificate.
Sources
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