[Research on siblings of mentally ill and retarded persons. Review of literature].Psychiatr Pol. 1996 Nov-Dec; 30(6):907-18.PP
Author describes the developmental tasks of the siblingship from the family life cycle perspective. Next, research on physical and mental health eg. psychopathological symptoms of siblings of mentally ill and retarded persons as well as research on their difficulties, perception of the brother's or sister's illness and its significance for their development is presented. In the last part of the paper research conducted by D. Reiss from the University of G. Washington is discussed. The main goal is the assessment of the relationship of shared and nonshared environmental factors in the development of adolescents. Research on siblings is of special significance for the understanding of the relation between genetic and environmental factors in the development of the person, as well as for the theory of mental disorders, especially the role of the family.