Euromosaic report, in which Sardinian "is in 43rd place in the ranking of the 50 languages taken into consideration and of which were analysed (a) use in the family, (b) cultural reproduction, (c) use in the community, (d) prestige, (e) use in institutions, (f) use in education". As the Sardinians have almost completely assimilated into the Italian national mores, including in terms of onomastics, and therefore now only happen to keep but a scant and fragmentary knowledge of their native and once first spoken language, limited in both scope and frequency of use, Sardinian has been classified by UNESCO as "definitely endangered". In fact, the intergenerational chain of transmission appears to have been broken since at least the 1960s, in such a way that the younger generations, who are predominantly Italian monolinguals, do not identify themselves with the indigenous tongue, which is now reduced to the memory of "little more than the language of their grandparents". As the long- to even medium-term future of the Sardinian language looks far from secure in the present circumstances, Martin Harris concluded in 2003 that, assuming the continuation of present trends to language death, it was possible that there would not be a Sardinian language of which to speak in the future, being referred to by linguists as the mere substratum of the now-prevailing idiom, i.e. Italian articulated in its own Sardinian-influenced variety, which may come to wholly supplant the islanders' once living native tongue. Overview As an insular language par excellence, Sardinian is considered the most conservative Romance language, as well as one of the most highly individual within the family; its substratum (Paleo-Sardinian or Nuragic) has also been researched. In the first written testimonies, dating to the eleventh century, Sardinian appears as a language already distinct from the dialects of Italy. A 1949 study by the Italian-American linguist Mario Pei, analyzing the degree of difference from a language's parent (Latin, in the case of Romance languages) by comparing phonology, inflection, syntax, vocabulary, and intonation, indicated the following percentages (the higher the percentage, the greater the distance from Latin): Sardinian 8%, Italian 12%, Spanish 20%, Romanian 23.5%, Occitan 25%, Portuguese 31%, and French 44%. The significant degree to which the Sardinian language has retained its Latin base was also noted by the French geographer Maurice Le Lannou during a research project on the island in 1941. Although the lexical base is mostly of