A viral optical illusion challenges readers to find the hidden number "7103" amidst a grid of "7105." The speed at which you spot it reveals insights into your visual IQ and cognitive processing. This ...

An optical illusion is a visual phenomenon where our perception of an image differs from objective reality. This image is seen as a 3D distortion illusion, where the arrangement of the lines in the ...

Scientists working within the Human Brain Project have for the first time uncovered a direct relation between brain cell size and IQ level. As they describe in the journal eLife, larger neurons in the ...