However, in 2014, the results of a study by Lipson "et al." contradicted these results. Unlike the earlier studies which focused only on mtDNA, the new study used whole genome data, allowing them to study hundreds of thousands of ancestors, not just one lineage. The team was also using more sophisticated statistical analysis methods that allowed the examination of genetic mixing between Southeast Asian populations. The new study found that all ISEA populations had genes originating from the aboriginal Taiwanese. Contrary to the claim of a south-to-north migration in the "Out of Sundaland" hypothesis, the new whole-genome analysis strongly confirms the north-to-south dispersal of the Austronesian peoples in the prevailing "Out of Taiwan" hypothesis. The researchers further pointed out that while humans have been living in Sundaland for at least 40,000 years, the Austronesian people were recent arrivals, and the results of the previous studies failed to take into account admixture between them.