An economist says Papua New Guineans have lost nearly half of the economic power they had in 1980.
Paul Flanagan, from the Australian National University, has worked in PNG and studied the economy for many years.
He says the focus of successive governments on resource development has brought few gains for the people.
He says the average Papua New Guinean's economic wellbeing has fallen dramatically since 1980.
Mr Flanagan spoke with Don Wiseman who began by asking him to define the term 'economic wellbeing'.