The Relationship between Structure of Economic-Social Development and Demographic Structure in Family System in Iran over the Past Three Decades

This study aimed to examine the relationship between structure of economic-social development and demographic structure in family system in Iran over the past three decades. The theoretical framework of study is based on the theory of SaifullahSaifullahi in both macro and micro levels. This study is obtained from documents, field study and survey by questionnaire technique that have formal and structural and credit validity (Cronbach's alpha upper than 70%).  The statistical society of this study are the number of households living in Tehran in95-94 based on data from the Statistical Center of Iran reported 4/1 million households and were selected according to Cochran formula by the sample size via cluster and sharing sampling method and according to the variables measurement level it was reported form statistical tests by Kolmogorov-Smirnov and investigating hypotheses of study through one-sample t-test and following results were obtained. Documentary evidences have shown inseparable association of economic-social development and changes of demographic elements and components of family system. Interviews with experts showed that the most important developments in the family based on propagation of nuclear family and the survey findings showed the results of one-sample t-test representing significant relationship between the structure of economic-social development and demographic elements and components in family system in Iran over the past three decades.