Juan Huarte de San Juan

Juan Huarte de San Juan or Juan Huarte y Navarro (c. 1530-1592) was a Spanish physician and psychologist. He was born at Saint-Jean-Pied-de-Port around 1530, and was educated at the university of Huesca, where he graduated in medicine.

Though it appears doubtful whether he practised as a physician at Huesca, Huarte distinguished himself by his professional skill and heroic zeal during the plague which devastated Baeza in 1566.

His Examen de ingenios para las ciencias (1573) won him a European reputation, and was translated by Lessing. Though now superseded, Huarte's treatise is historically interesting as the first attempt to show the connection between psychology and physiology, and its acute ingenuity is as remarkable as the boldness of its views.