パプア諸語
The East Papuan languages were proposed as a family by linguist Stephen Wurm (1975) and others. However, their work was preliminary, and there is little evidence that the East Papuan languages actually have a genetic relationship. For example, none of these fifteen languages marked with asterisks below share more than 2–3% of their basic vocabulary with any of the others. Dunn and colleagues (2005) tested the reliability of the proposed 2–3% cognates by randomizing the vocabulary lists and comparing them again. The nonsense comparisons produced the same 2–3% of "shared" vocabulary, demonstrating that the proposed cognates of the East Papuan languages, and even of proposed families within the East Papuan languages, are as likely to be due to chance as to any genealogical relationship. Thus in a conservative classification, many of the East Papuan languages would be considered language isolates.