From the study of an unselected group of sixty-six patients with Parkinsonism, Booth concludes that the Parkinsonian personality is characterized by an urge toward action and by a striving for independence, authority and success within a rigid, moralistic code. Of genetic importance in this character configuration are such factors as a functional dominance of the locomotor system, identification with a dominant parent image, and an unfavorable position in sibling rivalry. The disease is precipitated by influences that disturb the dynamic equilibrium between an active, self-assertive life, and a rigid consideration of social responsibilities. The cardinal symptoms endeavor to gratify the Parkinsonian's dominant needs on a symbolic level. The therapeutic approach requires an appreciation of the typical personality traits of the Parkinsonian patients, in particular the excessive shame regarding failures and the need for purposeful activity.