The Power of Political Speech: From Persuasion to Action

Thu Apr 30 2026 at 03:00 pm to 05:00 pm UTC+10:00

Melbourne Connect - Manhari Room, Level 7 | Carlton

Melbourne Connect
Publisher/HostMelbourne Connect
The Power of Political Speech: From Persuasion to Action
Advertisement
Explore the risks AI poses to public discourse, political behaviour, and democratic institutions.
About this Event

As AI makes the mass production of political messaging cheaper and easier than ever, understanding how language shapes democracy has never been more urgent. Professor Stephan Lewandowsky draws on large-scale computational analysis of political speech to explore how rhetoric reflects — and influences — the health of democracy. His research provides a timely lens for thinking about the risks AI poses to public discourse, political behaviour, and democratic institutions.


Abstract
Democracy is in retreat around the world. Even countries that were long considered exemplary democracies are not immune against autocratization. Here we apply the lens of large-scale computational linguistic analysis to illustrate and understand those trends. Language is crucial to democracy: it permits negotiation of power relations; it is used to compete on the “marketplace of ideas” to inform government policy. But language is also the tool of demagogues and autocrats to control the populace and suppress dissent. How does discourse in a democracy differ from the rhetoric of autocrats? Can we anticipate the decline of a democracy by analyzing its political discourse? We present several strands of research that illustrate how language mirrors the health of a democracy and how it can also be used to subvert democracy. We first show that the tacit conceptions of truth and honesty that are embodied in political speech are strong predictors of political performance and societal welfare. An analysis of U.S. Congressional speeches reveals that since the mid-1970s, rhetoric has shifted from being evidence-based to being intuition-based –that is, instead of appealing to data and facts, politicians have increasingly appealed to feelings and hunches when making political arguments. This shift has been accompanied by increasing societal inequality, decreased congressional productivity, and increased polarization. We next show that political speech can be linked to violence in several ways. For example, we show that the language of political manifestos can be used to predict whether a particular manifesto gave rise to political violence. Similarly, presidential falsehoods have been associated with political violence during the last 175 years. We also show that persuasive language can be tailored to exploit people's particular vulnerabilities based on their personality or other personal characteristics, providing an avenue for large-scale manipulation. When considered together, it is clear linguistic analysis of political speech provides an early window into democratic backsliding and autocratization.

About the Speaker


Event Photos

Prof. Stephan Lewandowsky

Professor of Cognitive Science, University of Bristol

Professor Stephan Lewandowsky is a cognitive scientist at the University of Bristol whose main interest is in the pressure points between the architecture of online information technologies and human cognition, and the consequences for democracy that arise from those pressure points.

He is the recipient of numerous awards and honours, including a Discovery Outstanding Researcher Award from the Australian Research Council, a Wolfson Research Merit Fellowship from the Royal Society, and a Humboldt Research Award from the Humboldt Foundation in Germany.

Professor Lewandowsky also frequently appears in print and broadcast media and has contributed around 100 opinion pieces to the global media. He has been working with policy makers at the European level for many years, and he was first author of a report on Technology and Democracy in 2020 that has helped shape EU digital legislation.

Advertisement

Event Venue & Nearby Stays

Melbourne Connect - Manhari Room, Level 7, 700 Swanston Street, Carlton, Australia

Tickets

AUD 0.00

Icon
Concerts, fests, parties, meetups - all the happenings, one place.

Ask AI if this event suits you:

More Events

The Future of Ownership
Wed, 29 Apr at 05:00 pm The Future of Ownership

Melbourne Connect - The Forum (Level M)

2026 Melbourne University Law Review Annual Lecture
Wed, 29 Apr at 05:30 pm 2026 Melbourne University Law Review Annual Lecture

MLS Building G08 Lecture Theatre

2026 VICTORIA VENDOR COLLECTIVE
Sat, 02 May at 10:00 am 2026 VICTORIA VENDOR COLLECTIVE

Carlton Gardens

2026 Sir Kenneth Bailey Memorial Lecture
Wed, 06 May at 06:00 pm 2026 Sir Kenneth Bailey Memorial Lecture

Theatre G08, Melbourne Law School (Building 106)

Peer Workforce Futures
Fri, 08 May at 09:00 am Peer Workforce Futures

Health and Community Services Union

Greater Western Water Customer Care Days (Carlton North)
Wed, 13 May at 11:00 am Greater Western Water Customer Care Days (Carlton North)

Carlton Library

TeachMeet: Clarity to Impact: Data, Decisions & AI in Schools
Fri, 15 May at 09:45 am TeachMeet: Clarity to Impact: Data, Decisions & AI in Schools

Melbourne Connect

My Health Story Healthtech Powered by Lived Experience
Tue, 19 May at 05:30 pm My Health Story Healthtech Powered by Lived Experience

Melbourne Connect