Did the 'Hobbit' have Down syndrome?

The so-called 'Hobbit' skeleton discovered on the Indonesian island of Flores is simply a small modern human with Down syndrome and not a new species of early human, say researchers. But Professor Colin Groves, a bioanthropologist at the Australian National University, says the papers' conclusions are "implausible".  Groves believes the authors have ignored much of the evidence in favour of LB1's status as a separate species.