A finger-length fish has reignited a long-running debate about self-awareness, cognition and how much we’ve underestimated ...

Here’s a fun test: Dab some blush onto the forehead of a six-month-old baby and plop them in front of a mirror. They might look at their reflection with curiosity but ignore the rouge. Redo the ...

The mirror test has fascinated scientists for decades due to its simplicity and revealing nature. First introduced in 1970 by psychologist Gordon Gallup Jr., the experiment places a visible mark on an ...

A little blue-and-black fish swims up to a mirror. It maneuvers its body vertically to reflect its belly, along with a brown mark that researchers have placed on its throat. The fish then pivots and ...

Self-awareness may be beyond primates in the wild. Chimps, organutans and other species faced with a mirror react to a dot on their face in the lab, a widely used measure of self-awareness. But while ...