title: Regression periods in infancy: a case study from Catalonia.
abstract: Based on Rijt-Plooij and Plooij's (1992) research on emergence of regression periods in the first two years of life, the presence of such periods in a group of 18 babies (10 boys and 8 girls, aged between 3 weeks and 14 months) from a Catalonian population was analyzed. The measurements were a questionnaire filled in by the infants' mothers, a semi-structured weekly tape-recorded interview, and observations in their homes. The procedure and the instruments used in the project follow those proposed by Rijt-Plooij and Plooij. Our results confirm the existence of the regression periods in the first year of children's life. Inter-coder agreement for trained coders was 78.2% and within-coder agreement was 90.1%. In the discussion, the possible meaning and relevance of regression periods in order to understand development from a psychobiological and social framework is commented upon.
authors.affiliation: Departamento de Psicologia, Facultad de Ciencias de la Educación, Universidad de Girona, Emilio Grahit, 77, 1007 Girona, Spain. msadurni@zeus.udg.es
authors.forename: Marta
authors.initials: M
authors.lastname: Sadurní
authors.forename: Carlos
authors.initials: C
authors.lastname: Rostan
mesh_terms: D002657:Child Development; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D012043:Regression, Psychology