Published in Spanish in: León Garduno Estrada, Bertha Salinas Amescua; Mariano RojasHerera (Eds.) Calidad de Vida y Bienestar Subjectivo en Mexico, Plaza y Vald; S.A. de C.V. Mexico, ISBN 970-722-398-7, pp.17-55

Published in Danish in: 1). Kognition & Paedagogik, Tidsskrift om gode læringsmiljøerPositiv Psykologi, Vol. 16, nr. 60, 2006, pp.14-50 ISSN 0906-6225. 2). Lyhne, J. Knoop, H. H. (redaction) Positiv Psykologi, Positiv Paedagogik Dansk Psykologisk Verlag, 2008, pp.14-50, ISBN 0978-87-7706-126-4, p.31 -74

A good society is first of all a livable society and the livability of a society manifests in the happiness of its members. Therefore improvement of society requires an understanding of happiness, in particular answers to the following questions: 1) What is happiness precisely? 2) How happy are people presently? 3) What causes us to be happy or unhappy? 4) Can happiness be raised lastingly? Through the ages philosophers have toiled with these questions. Since the 1960's they are subject of empirical research. This paper takes stock of the progress.

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