Abstract
This paper aims to demonstrate the theory of social cognition which librarianship have an effect on societal development. For these purpose, the stages of societal development is classified into three stages of economic growth, information sharing and self-actualization of individual and objectives of developments are investigated by stages. At last, the theory of social cognition which librarianship contribute to societal development are demonstrated with searching the roels of libraries corresponding to the objectives of development stages.