1 Erratum to: Soc Indic Res DOI 10.1007/s11205-015-1129-9

Unfortunately, in the original publication of the article, the last paragraph in the Introduction section was published incorrectly. The correct version is given below:

“The present paper has to be considered as a collective work. However, paragraphs 1, 2, and 3 have to be ascribed to Filomena Maggino, while paragraphs 4 and 5 to Carolina Facioni.”