Happy Aged People Are All Alike, While Every Unhappy Aged Person Is Unhappy in Its Own Way

• Michele Tumminello,

  Affiliations Department of Social and Decision Sciences, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States of America, Dipartimento di Fisica, Università di Palermo, Palermo, Italy

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• Salvatore Miccichè,

  Affiliation Dipartimento di Fisica, Università di Palermo, Palermo, Italy

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• Ligia J. Dominguez,

  Affiliation Department of Internal Medicine and Geriatrics, University of Palermo, Palermo, Italy

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• Giovanni Lamura,

  Affiliation Socio Economic Research Centre, National Institute of Health and Science on Aging (I.N.R.C.A.), Ancona, Italy

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• Maria Gabriella Melchiorre,

  Affiliation Socio Economic Research Centre, National Institute of Health and Science on Aging (I.N.R.C.A.), Ancona, Italy

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• Mario Barbagallo,

  Affiliation Department of Internal Medicine and Geriatrics, University of Palermo, Palermo, Italy

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• Rosario N. Mantegna

  * E-mail: rn.mantegna@gmail.com

  Affiliation Dipartimento di Fisica, Università di Palermo, Palermo, Italy

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