A sociological theory of knowledge developed by Peter L. Berger and Thomas Luckmann with their 1966 book, The Social Construction of Reality. The focus of social constructionism is to uncover the ways in which individuals and groups participate in the creation of their perceived reality. As an approach, it involves looking at the ways social phenomena are created, institutionalized, and made into tradition by humans. Socially constructed reality is seen as an ongoing, dynamic process; reality is re-produced by people acting on their interpretations and their knowledge of it.