Studied is a status ailment or debuff found in dNethack. Targets that have been studied are easier to hit, and take more damage from melee attacks. Multiple instances of this debuff typically don't stack; instead, the more severe of the two studied values is used. Examples of monsters that can apply this debuff are autons ('the foo studies you carefully.') and orc captains ('The foo curses and urges <his/her> followers on.').