The importance of a free press to a thriving democracy is well-known. But what is its importance to a thriving economy?

We have found evidence attacks on press freedom – such as jailing journalists, raiding their homes, shutting down printing presses, and using libel laws to thwart reporters – have measurable effects on economic growth. Our research team – spanning economics, journalism and media – used rankings on press freedom from the US-based Freedom House and data on economic growth to examine 97 countries from 1972 to 2014.

We found countries that recorded a decrease in press freedom also experienced a 1%-2% drop in real gross domestic product growth.

Lasting economic effect

Our findings affirm other economic studies showing the institutions that uphold a “rule of law” are strongly associated with stronger economic performance. Our work took into account education, labour force and physical capital.

Perhaps our most significant – and unexpected – finding is the long-term economic impost of undermining a free press.

Freedom House’s own research suggests “press freedom can rebound from even lengthy stints of repression when given the opportunity”.

“The basic desire for democratic liberties, including access to honest and fact-based journalism, can never be extinguished,” the research found.

But this rebound does not translate to the economy. In nations where freedoms were removed, and then restored, economic growth did not fully recover.

That is a significant point at a time when economic frustration is contributing to waning enthusiasm for democracy, increasing distrust of legacy media and the rise of populist and authoritarian governments taking action to control the news media.

Throughout Asia, there has been a tightening of press freedoms.

In Hong Kong, new security laws threaten to snuff out independent media. In Myanmar, publications have been silenced and journalists arrested. In Malaysia, journalists have been harassed and jailed for criticising the government. In the Philippines, respected investigative journalist Maria Ressa has been detained ten times in two years and convicted of “cyberlibel” under controversial laws. In India, the world’s largest democracy, the Modi government has curbed press freedoms.

Source: Freedom House

These are not just issues for other countries.

Australia might look relatively free, particularly compared with near neighbours. But recent years has seen Australian Federal Police raids on journalists homes and the new restrictive national security laws. The journalists’ union, the Media Entertainment and Arts Alliance, has called the federal government’s actions a “war on journalism”.

Acknowledging limitations

We acknowledge our work is a macro-level study, examining broad statistical associations, finding many relationships that are notable at the 1% level of significance. These cannot, and should not, be a replacement for nuanced analyses of specific contexts, cultures and media models.

We also acknowledge that Freedom House is just one of a number of international bodies that keeps track of people’s access to political rights and civil liberties. The organisation uses a specific US-centred view to look at individual freedoms – including the right to vote, freedom of expression, equality before the law – that can be affected by state or nonstate actors.

But it does factor in the ability of journalists to report freely on matters of public interest, and show the connection with economic prosperity.

“A free press can inform citizens of their leaders’ successes or failures, convey the people’s needs and desires to government bodies, and provide a platform for the open exchange of information and ideas,” according to Freedom House. “When media freedom is restricted, these vital functions break down, leading to poor decision-making and harmful outcomes for leaders and citizens alike.”

There is more statistical work to be done, but our analysis shows strong evidence press freedom, along with better education, is a key to improving economic performance.

Perhaps this might be motivation enough for the government in Australia – and other countries – to reconsider their approach to press freedom, and provide more financial support for public-service journalism, such as that offered by the ABC and SBS.

Alexandra Wake is Program Manager, Journalism, and Alan Nguyen is Lecturer in Media at RMIT University. Abbas Valadkhani is Professor of Economics and Jeremy Nguyen is Senior Lecturer in Economics at the Swinburne University of Technology.

This article first appeared on The Conversation.