General reasoning
Use the Free IQ Test when you want one broad, short session across several reasoning domains.
IQ & cognition
IQ tests, cognitive abilities and how to interpret results
Explore the existing DesperateMinds IQ library alongside focused reasoning and cognitive tasks. Use each tool for the question it can answer, and keep measurement limits visible.
Choose the right question
Cognition is broader than one score
Different tasks sample different abilities. The useful question is not only “What is my IQ?” but also which kind of reasoning or cognitive process you want to explore.
Specific reasoning skills
Use verbal, numerical, logical, spatial and pattern tasks when one type of reasoning is the real focus.
Working memory and speed
Working memory and processing speed are distinct cognitive processes and should not be treated as interchangeable with IQ.
Scores and measurement
Raw performance, score ranges, norms, uncertainty and test conditions all matter when interpreting a result.
Featured assessment
Start with the Free IQ Test
Use the broad free test when you want a quick reasoning overview before deciding whether a narrower cognitive task would be more useful.
30 questionsUp to 20 minutesFree basic resultNo sign-up
Learn and explore
Use the existing IQ library without losing the wider picture
These established guides keep their familiar URLs and now connect more clearly to focused cognitive assessments and measurement methodology.
Scores
IQ score chart
Understand common standardized score bands, percentiles and why small differences should not be overread.
Read the score guide →AccuracyHow accurate are online IQ tests?
Review limits involving item banks, norming, conditions, practice effects and measurement uncertainty.
Read about accuracy →ReasoningVerbal vs nonverbal IQ
See how language-heavy and less language-heavy tasks differ, then choose a focused reasoning test.
Compare reasoning types →MemoryWorking memory and IQ
Learn how working memory relates to cognitive performance without treating the two as identical.
Read the guide →SpeedProcessing speed and IQ
Understand what processing speed can contribute to cognitive performance and where online tasks are limited.
Read the guide →MeasurementHow IQ tests are scored
Compare raw scores, standardized scores, percentiles and the role of norming.
Understand scoring →Focused cognition explainers
Separate the constructs before you interpret a score
These focused guides answer narrower questions about reasoning, pattern recognition and cognitive flexibility without reducing cognition to a single score.
Explainer
What Is Numerical Reasoning? Skills, Tests and Math Differences
Numerical reasoning is narrower than overall math ability. Learn what each term covers, how tests differ, and why strong math grades do not guarantee the same reasoning score.
Read the guide →ExplainerLogical Reasoning vs Critical Thinking: Key Differences
Logical reasoning checks whether conclusions follow from premises. Critical thinking is broader, adding evidence quality, assumptions, context and judgment. See how they differ.
Read the guide →ExplainerWhat Is Pattern Recognition? How IQ Tests Use It
Pattern-recognition tasks can sample rule induction and fluid reasoning, but they are not pure intelligence measures. Learn what matrices and sequences actually require.
Read the guide →ExplainerWhat Is Cognitive Flexibility? Task Switching Explained
Task switching is one laboratory way to study cognitive flexibility, not the whole construct. Learn what switch costs measure, what they miss, and how to interpret a task.
Read the guide →Use this hub well
Match the tool to the decision
Online cognitive tasks are most useful when the purpose stays clear. Curiosity and practice need a different level of evidence from school, clinical, legal or employment decisions.
- Use a focused test when one ability is the real question.
- Treat online results as one session of evidence, not a fixed limit on ability.
- Use professional assessment when a cognitive result has important real-world consequences.
Assessment literacy
Understand what cognitive scores actually mean
Focused reasoning tasks, online cognitive tests and broad IQ batteries answer different questions. Use these guides to keep the interpretation matched to the test.
Guide
What Do Cognitive Tests Measure?
See how reasoning, memory, speed and attention differ.
Read guide →GuideReasoning Tests vs IQ Tests
Compare narrow reasoning tasks with broader intelligence batteries.
Read guide →GuideAre IQ Tests Accurate?
Review reliability, validity and online testing limits.
Read guide →Next step
Need a formal cognitive or psychological assessment?
Online tests cannot provide the documentation or standardized interpretation required for many clinical, educational or high-stakes decisions. Use Find Help to understand professional routes.
Assessment support