title: The compulsive border crosser.
mesh_terms: D000328:Adult; D001007:Anxiety; D001604:Berlin; D003192:Compulsive Behavior; D003469:Culture; D005106:Exploratory Behavior; D005715:Gambling; D006801:Humans; D007391:International Cooperation; D008297:Male; D001523:Mental Disorders; D010259:Paranoid Disorders; D011057:Politics; D012043:Regression, Psychology; D012649:Self Concept; D012926:Social Control, Formal; D014171:Transients and Migrants; D014195:Travel