Defining sustainable development as a development capable of satisfying the needs of the present generation without compromising the possibility of future generations satisfying their own needs, opens the way to concerns related to quality of life. The reference to needs allows for the inclusion of not only the necessity that development be harmonious towards and respectful to the environment, but equally for recognition of the individual's own well-being. Furthermore, at the edge of the 21st century, globalisation and its corollary, global trade and communications, creates pressure towards cultural life-style uniformity and brings along fear of a the standardisation of values and a increased anonymity. Researchers and practitioners from the different disciplines involved in IAPS are able to furnish explanations and information capable of identifying the conditions of well-being and thereby help formulate decisions in environmental matters.