How we can improve online political debates

Online political debates are often characterised by sharp divisions, personal attacks and a low level of information. However, a new study from the University of Copenhagen and King's College London shows that this does not have to be the case. By adjusting just a few elements in the way we debate, the quality of the conversation can be significantly improved.

The study, published in the renowned journal Science Advances, was conducted by Tobias Heide-Jørgensen, Gregory Eady and Anne Rasmussen. Using large language models (LLMs) such as ChatGPT, they conducted experiments with over 3,000 citizens in the United States and the United Kingdom.

Debaters mirror each other

Participants were presented with counterarguments that varied in tone, type of argumentation, willingness to compromise and party political signalling. The results are clear:

‘When counterarguments are respectful, based on facts and signal openness to compromise, the likelihood of the opponent responding with a high-quality contribution doubles,’ says Associate Professor Gregory Eady.

The study shows that proposals for compromise not only increase the willingness to compromise, but also reduce disrespect in responses. Evidence-based arguments have similar effects and contribute to a more civil and constructive conversation. These elements reinforce each other and create a more respectful and open debate.

"Participants perceive those who use respect, evidence and compromise as more open, informed and constructive. This explains why these approaches promote better conversations," says Gregory Eady.

Also works in toxic environments

The positive effects of a respectful tone and evidence hold true even in polarised and toxic debate environments – and when participants interact with political opponents.

‘This shows that constructive debate strategies are robust, even under difficult conditions,’ says Anne Rasmussen.

Although the tone and quality of the debate can be improved, this does not necessarily change people's political attitudes.

‘We see no signs that people change their minds, even when they encounter high-quality arguments,’ explains Anne Rasmussen, continuing:

‘But that doesn't mean it's a waste. Creating a more open and respectful debate culture is in itself a democratic gain.’

AI can promote debate culture

The researchers hope that their findings can be used to improve debate formats on social media and in political discussions in general.

‘Our study shows that it is actually possible to change the tone of the debate – and that doesn't necessarily require people to change their attitudes, just their approach,’ says Anne Rasmussen, elaborating:

"Our results can contribute to understanding how we can create more constructive political dialogue in an era characterised by polarisation and misinformation. At the same time, we show that artificial intelligence can play a role in promoting a better culture of debate," she concludes.

The study is entitled ‘Understanding the success and failure of political debate’. Read it here.