The ability to use both hands equally well is called ambidexterity.
Ambidexterity describes the capacity to perform tasks with both the left and right hands with equal skill. While many people have a dominant hand (right or left), ambidextrous individuals exhibit similar dexterity and coordination with either hand. This means they can perform tasks like writing, drawing, or using tools effectively with both hands.
It's important to note that true ambidexterity is relatively rare. Some people may be more accurately described as having mixed-handedness, meaning they prefer one hand for certain tasks and the other hand for different tasks, without necessarily having equal proficiency in all areas with both hands. Ambidexterity differs from being cross-dominant (using different hands for different tasks like writing and throwing) which is more common.
Some researchers believe that ambidexterity may be influenced by genetics or early childhood training, although the exact cause is still being investigated.