This research, with the aim of investigating the applied indicators of social
development, has studied the concept of social development at international and
national levels. Considering research purposes and questions, the research method is
descriptive and qualitative which has been carried out in two stages of library and
Delphi technique. The research sample size (Delphi method) consists of 30
academic experts and executive authorities in social development area, who have
been selected randomly. Finally, according to calculation of social indicators,
significance and priority in process of Delphi technique, the concept of social
development was defined and interpreted as the quality of social system through
institutionalization of development ethics, especially “ethics of social development”
in order to achieve “social solidarity (consensus)” and “social equality” for
promoting “life quality level” and enhancing the coefficient of “social security”. In
the end, social development was divided, based on scientific logic of indicatormaking,
into five-fold dimensions as well as sub-dimensions associated with it.
 

This paper investigates the social relationship and life quality. The paper analyzes a secondary data form a survey is conducted by Iranian Student’s Polling Agency, ISPA, about favorable or optimal life among University students. The sample is consisted of 20670 people in different parts of Tehran.

Results show 59 percent of respondents have average life quality and social capital and its dimensions social trust and social participation had the highest score among others. The levels of these three variables were different and significant in types of life quality.

After analysis of findings through calculation of path analysis coefficient, the results indicate that among variables influencing on the social capital, average life quality with 85 correlation co-efficiency, has the highest influence. Results indicate that average life quality increases solidarity and relation realm of individuals and it can result into the trust and finally, all these factors increase and reinforce social capital.

The current research is intended to study the relationship and impact of objective life quality on subjective life quality for the population of more than 15 years of age in Amol County. The required data was collected by using a survey method and questionnaire which were done on a statistical sample of 384 individuals. The descriptive findings indicated that two dimensions including the subjective and objective life qualities and their variables are lower than medium level in the county of Amol. This shows that the situation was not appropriate. The definitional findings showed that all of the hypotheses except the hypothesis for age were confirmed with a confidence level more than 99% and with an error level lower than 1%. The main variables were entered into the model for multiple regression analysis. The value of determination coefficient was 0/483. This indicated that the independent variables were defining 48/3% of the variance and changes in the dependent variables. The value is good. In order to measure the direct and indirect impacts of the independent variables on the dependent variables, the path analysis method was used. The results of the research revealed the importance of simultaneous study, relationship and the impact of the subjective and objective qualities of life instead of using the approaches individually.