the study of religiosity,s amount and it,s role in happiness,s youth

astract: happiness is a great gift that should be searched , found , seized and transmit to others . with regard the happiness influence on social and individual life and the widespread role of religion in human lives , the present study has been done with the aim investigate the relationship between religiosity and amount of happiness among young people in tehran . in this study were explored the role of religion in creating, intensifying or weakening the happiness through the theory of cognitive and ideas of many thinkers such as durkheim, weber, tocqueville, argyle , diener and biswas diener. in order to determine the relationship between these two categories, 384 questionnaires have been distributed among youth 18 to 29 years in tehran city. the findings show that there is a significant correlation between religiosity and happiness of individuals. the results indicate that there is a significant positive correlation between the three dimensions of religiosity , religious belief , religious feelings , religious practices and amount of happiness young. thus it can be concluded that religion and different dimensions of religiosity plays an important role in creating and heightening happiness. key words: happiness, religious belief, religious feelings, religious practices, religiosity, young.