title: [Factorial study of mental growth curves; experimental contribution to the study of Ribot's law of regression].
authors.forename: P G
authors.initials: PG
authors.lastname: WEIL
mesh_terms: D001686:Biological Phenomena; D002648:Child; D006801:Humans; D008607:Intellectual Disability; D010151:Paintings; D010829:Physiological Phenomena