via Science Daily/ANU, 20 September 2018: A new paper in the Journal of Archaeological Science shows evidence for a rapid population growth in Southeast Asia around 4,000 years ago using an analysis that takes into account the proportion of children and infants in population measurements.

Researchers at The Australian National University (ANU) have uncovered a previously unconfirmed population boom across South East Asia that occurred 4,000 years ago, thanks to a new method for measuring prehistoric population growth.
Using the new population measurement method, which utilises human skeletal remains, they have been able to prove a significant rapid increase in growth across populations in Thailand, China and Vietnam during the Neolithic Period, and a second subsequent rise in the Iron Age.
Source: Southeast Asian population boomed 4,000 years ago — ScienceDaily