Study title

Influence of family and sibling relations on development of young people (supplemental form for parents). Topics: Frequency of leisure activities (scale); common organization of leisure time with sibling A and desired frequency; equal treatment of siblings by parents; emotional relation with sibling A; trust and harmony in one's family; influence on personal decisions by others (scale); assessment of parental relation; occupational qualification of parents; reference persons with problems in school, politics, friendship, sexuality, love, fashion, leisure time; self-assessment of condition of health; age at first menstruation or when voice has broken; attitudes in comparison with sibling A; significance of high school achievement; class level; year of first day at school; education path sought after school degree; school attitudes and conduct; willingness to accept social functions; relations with classmates and teachers; reasons for achievement of demands of the teacher; effort for maintenance of discipline; interest in cultural, sociable, social activities (scale); willingness to accept a physically difficult, dirty job (scale); willingness to accept a poorly paid job (scale); supplemental form for parents: assessment of the relation of siblings A and B at various points in time; common hobbies and friends of siblings A and B; comparison of frequency of various activities of siblings A and B (scale); importance of various factors for structuring family life (scale); equal treatment of the siblings by mother or father; priority influence on upbringing of child A or B by mother or father; age and occupational qualification of parents; total number of siblings; child-raising of the children by natural parents.