restraint of posture and movement; physiological over-response (one of the consequences of which is extreme sexuality); love of privacy; a certain over-intentness and apprehensiveness; secretiveness of feeling and emotional restraint; dislike of company; shyness and inhibited social address; agoraphobia; resistance to habit formation and incapacity to build up routines; awareness of inner mental processes and tendency to introversion; need of solitude when troubled; orientation toward maturity and old age.

