title: The "circumplex" and curvilinear functions.
authors.affiliation: Institute of Psychology, University of Oslo, Norway.
authors.forename: G F
authors.initials: GF
authors.lastname: Eckblad
mesh_terms: D000223:Adaptation, Psychological; D005190:Family / Q000523:psychology*; D005196:Family Therapy; D006801:Humans; D015233:Models, Statistical; D010552:Personality Assessment / Q000706:statistics & numerical data*; D011594:Psychometrics