(I) Childless people.
(II) People who had been afflicted with various diseases in childhood.
(III) Children of sickly, nervous, psychopathic parents who have kept their progeny in a constant state of anxiety, full of terrors and troubles of life.
(IV) People who had been affected by a series of shocks and fears in childhood and youth.
(V) People whose parents suffered long from various systemic diseases, especially cardiac and tubercular troubles.
(VI) In a large family of children the first, or last child, or sickly child of psychopathic parents.
(VII) The only child, or sickly child, especially of a widowed parent who is of a psychopathic diathesis.
In all these cases the psychopathic state is due to early cultivation of the fear instinct, self-impulse, and low level or dissociated state of vital reserve energy.