In High intelligence: A risk factor for psychological and physiological overexcitabilities, a group of academic and industry neuroscientists survey a self-selected group of 3,715 MENSA members about their mental health history and find a correlation between high IQ and clinical anxiety and depression disorders, an effect they attribute to "overexitabilities" -- "the same heightened awareness that inspires an intellectually gifted artist to create can also potentially drive that same individual to withdraw into a deep depression." Read the rest