Example: The actors on the stage are directing their remarks directly against the victim in the box. A _shut-in personality_ is one that habitually responds inadequately to normal social appeal. _Sense of unreality_ is one of the commonest psychic alterations through which customary sensation states are displaced by unnatural and usually distressing ones. Examples: The breakfast table appears undefinably altered. Laughter is accompanied by strange, rather than by normal, sensations. _Morbid inhibition_ is an abnormal, negative activity of the will. Sometimes a patient will try pitifully to express some thought or feeling; the desire to explain is there, but will is blocked in action. Or the patient attempts to dress, makes repeated new beginnings, but cannot succeed. We say, "He is inhibited." An _obsession_ is an idea which morbidly dominates the mind, constantly suggesting irrational action. Obsessed patients may consistently step in such a way as to avoid the juncture of the flagstones on the pavement; may insist on removing their shoes in church; may hail each person met on the street and tap him on the arm; may refuse to ever leave the house without an open umbrella; or may try to attack every man they see, not because they want to hurt or kill, but because they are obsessed to the performance of the action. A _tic_ is a useless, habitual spasm of a muscle imitating a once purposeful action. Motor tics, such as habitual jerking of the arms, shrugging the shoulder, contorting the face, shaking or nodding the head, snapping the fingers, etc., are very common among nervous children, and even in many otherwise normal grown-ups. _Distractibility_ is an abnormal variation of attention. The common inability of the hypomanic patient to hold his attention to any subject when another is open, is very like the distractibility of the child who turns to every new interest as it is presented. _Negativism_ is a state of persistent compulsion to contrary response to suggestion. It is with these patients as though not only initiative were lost but also the power to follow another's lead. But their independence asserts itself in opposing every suggestion and in acting so far as possible contrary to it. _Mutism_, as used in psychiatry, is an abnormal inhibition to speech. Patients sometimes speak no word in many months. To all appearance they are true mutes. Then suddenly something may remove the mental blockade and they talk. _Compulsive acts_ are acts contrary to reason, which the will cannot prevent. A seemingly quite normal patient will sometimes grab a vase from a stand in passing, and dash it to the floor. Something "urged" him to do it, and he could not resist. Others will tear their clothes to shreds, not in anger, but because they "could not help it." _Psychomotor overactivity_ is abnormal activity of both mind and body, contrary to reason and uncontrolled by will.