A visual challenge, the 'Spot the 409' test, requires participants to find a single '409' amidst numerous '406's within seven ...

Test your observation skills with a jungle optical illusion where a snake is cleverly hidden among tortoises. This challenge ...

An optical illusion featuring a camouflaged squirrel in an autumn scene is challenging internet users. Only 21% of people can ...

A challenging optical illusion is baffling social media users, tasking them to find a hidden child within a green tree and bush scene. The boy is expertly camouflaged by leaves and shadows, making him ...

The method of observation while a test is being carried out is utilized in France on a fairly large scale for vocational guidance or professional selection, although this method has not been as yet ...