A lock assembly having an unlocked state, a locked state, and a deadlocked state, the lock assembly comprising: a latch assembly having a latch movable between an extended position and a retracted position; an interior handle operatively coupled to the latch to move the latch between the extended position and the retracted position; an interior hub coupled to the interior handle for rotation therewith; an exterior handle operatively coupled to the latch to move the latch between the extended position and the retracted position; an exterior hub coupled to the exterior handle for rotation therewith; a first member operatively coupled to the interior handle to permit or prevent movement of the interior handle; a second member operatively coupled to the exterior handle to permit or prevent movement of the exterior handle; an interior lock element engageable with the first member; and an exterior lock element engageable with the second member, wherein when the lock assembly is in the unlocked state, the interior lock element is disengaged from the first member and the exterior lock element is disengaged from the second member to permit retraction of the latch via the interior handle or the exterior handle, wherein when the lock assembly is in the locked state, the exterior lock element is engaged with the second member to prevent retraction of the latch via the exterior handle, and wherein when the lock assembly is in the deadlocked state, the interior lock element is engaged with the first member to prevent retraction of the latch via the interior handle and the exterior lock element is engaged with the second member to prevent retraction of the latch via the exterior handle. a latch assembly having a latch movable between an extended position and a retracted position; an interior handle operatively coupled to the latch to move the latch between the extended position and the retracted position; an interior hub coupled to the interior handle for rotation therewith; an exterior handle operatively coupled to the latch to move the latch between the extended position and the retracted position; an exterior hub coupled to the exterior handle for rotation therewith; a first member operatively coupled to the interior handle to permit or prevent movement of the interior handle; a second member operatively coupled to the exterior handle to permit or prevent movement of the exterior handle; an interior lock element engageable with the first member; and an exterior lock element engageable with the second member, wherein when the lock assembly is in the unlocked state, the interior lock element is disengaged from the first member and the exterior lock element is disengaged from the second member to permit retraction of the latch via the interior handle or the exterior handle, wherein when the lock assembly is in the locked state, the exterior lock element is engaged with the second member to prevent retraction of the latch via the exterior handle, and wherein when the lock assembly is in the deadlocked state, the interior lock element is engaged with the first member to prevent retraction of the latch via the interior handle and the exterior lock element is engaged with the second member to prevent retraction of the latch via the exterior handle.