About starp
About the starp IQ test
Four reasoning skills. Thirty questions. A consistent scoring method calibrated using 12,700 simulated completed assessments.
- Questions
- 30
- Time limit
- 25 minutes
- Reasoning areas
- 4
What the IQ test covers
starp is built around a focused reasoning challenge: work through a varied set of questions, then explore your results and the thinking behind each solution. The test combines four areas, with one point for every correct answer.
- Pattern recognition 8 questions
- Find the rules behind sequences, shapes and visual patterns.
- Spatial thinking 8 questions
- Work with rotations, reflections, grids and three-dimensional objects.
- Logical reasoning 7 questions
- Use clues and constraints to decide which conclusions follow.
- Numerical reasoning 7 questions
- Solve problems involving quantities, ratios and relationships between numbers.
Try our free reasoning practice questions to see the format and read worked solutions before starting.
How your IQ estimate is calculated
Your result follows fixed, reproducible rules. Each submitted answer is checked against its defined solution, and your correct-answer total is converted into a score using the same mapping for everyone. Every additional correct answer increases the score.
The current scale runs from 42 to 144. The skill profile shows the percentage of correct answers in each reasoning area.
| Correct answers | IQ estimate |
|---|---|
| 20 of 30 | 90 |
| 22 of 30 | 100 |
| 24 of 30 | 109 |
| 30 of 30 | 144 |
Scoring methodology
Calibrated using 12,700 simulated completed assessments
We modeled a group with varied ability levels and question-difficulty assumptions. Each simulated assessment answered all 30 questions, giving us 381,000 modeled responses to examine.
- Simulated assessments
- 12,700
- Modeled responses
- 381,000
- Simulated group average
- 100
We used those results to tune the scoring scale so the simulated group averages exactly 100, while keeping the endpoints at 42 and 144. We checked every result against the scoring method and kept the answers unchanged during calibration.
The result is a defined scoring scale informed by simulation. Future groups can have different averages; 100 is the calibrated average of this particular simulated group.
Current calibration: .
What your result can tell you
Your score summarizes your performance on starp's reasoning questions. The four-skill profile and question explanations help you look beyond the total: where you answered correctly, which tasks challenged you and how each solution works.
starp is intended for personal insight and practice. Simulation-based calibration is not clinical validation or a population-normed IQ assessment. Concentration, testing conditions and familiarity can influence performance, and improvement with practice does not by itself establish a change in intelligence.
Your full IQ report
Taking the test is free. Viewing your score and full report is a paid option, which you can choose after completing your first test.
Full report
US$3.99 one-time payment
Your IQ estimate, four-skill profile, question explanations and a downloadable report. Buying a report does not start a subscription.
Any applicable tax is shown before payment. See our purchase and refund terms and privacy policy for details.
Before you take the test
Set aside 25 minutes and choose somewhere you can concentrate. You can review and change answers before submitting; moving between questions does not pause the timer.
No account is needed. Answers save as you go, and the timer keeps running if you leave. Return in the same browser to continue an unfinished test or reopen a purchased report. Download your report to keep a copy on another device.
Ready to explore your reasoning?
Ages 16+; guardian permission for ages 16–17. Test questions are free; the full report is US$3.99 once. You can also try practice questions first.