title: [The study of changes in comportment with the passage of time].
mesh_terms: D002648:Child; D002657:Child Development; D002675:Child, Preschool; D006801:Humans; D011581:Psychological Tests; D011594:Psychometrics; D012043:Regression, Psychology
vernacular_title: L'étude des changements dans les comportements au cours du temps.