pymetrics games / Lengths
pymetrics Lengths practice
A face flashes a little or a big mouth. Say which. Some right answers win 5 cents.
One full free game, then a pymetrics pass ($4.99 for 30 days, paid once) for unlimited practice. No official rules are public. We built it from the published research task it is based on and what candidates and other practice sites consistently report.
How Lengths works
- A face appears and its mouth flashes briefly. The two mouths differ by only about 10%.
- Press the left arrow for a little mouth, the right arrow for a big one.
- Some right answers win 5 cents. One length secretly pays more often than the other.
- Practice has 120 faces in three parts.
Time and scoring
About 5 minutes. How accurate you are for each length, and whether you lean towards the one that pays more. pymetrics does not mark answers right or wrong overall: it builds a profile of traits and compares it with people who do well in the role. How that turns into a decision is not public. Our result shows practice measures only.
Tips
- Fix your eyes where the mouth appears before it flashes.
- Do not chase the money; answer what you saw.
Questions
Why does it feel like guessing?
It is meant to be hard to tell. The research task it copies measures how rewards shift your answers when you are unsure.