Bob Birrell was Reader in Sociology and head of the Centre for Population and Urban Research at Monash University until 2017. He was the joint-editor of the demographic journal People and Place over the years 1993 to 2010. He is currently the head of the demographic think tank, The Australian Population Research Institute (TAPRI).

Katharine Betts is an Adjunct Associate Professor of Sociology at Swinburne University of Technology.