Technische Universität München
Why people reject new rules – but only until they take effect
TECHNICAL UNIVERSITY OF MUNICH
NEWS RELEASE
Study shows psychological reasons for responses to smoking bans and the like
Why people reject new rules – but only until they take effect
• Many people react negatively to rules that restrict personal freedom
• Study shows that rejection decreases significantly after the rules are introduced
• The reason is a psychological mechanism that causes rejection of a change in itself
From smoking bans to new speed limits – many people soon stop resisting policy changes that restrict their personal freedom once the new rules come into force. This conclusion was reached in a study conducted by the Technical University of Munich (TUM) and the University of Vienna. The researchers also identified the underlying psychological mechanism to gain important insights for possible communication strategies when introducing such measures.
Policy measures that ban or restrict an activity frequently meet with resistance. In psychology, the resistance to restrictions on personal freedom is known as reactance. The resulting emotional debates can make politicians hesitant to make decisions that they actually consider necessary for achieving important goals such as climate targets or public health objectives.
In many cases, however, reactance appeared to decline significantly after measures are implemented. This phenomenon has not yet been adequately studied. Armin Granulo (Technical University of Munich), and Christoph Fuchs and Robert Böhm (both at the University of Vienna) have now conducted seven individual studies to investigate whether this observation is true and also to identify the underlying psychological mechanism.
The researchers began by conducting representative surveys on the introduction of workplace smoking bans in several European countries, seatbelt laws in the USA and stricter speed limits in the Netherlands. They then conducted several experiments to test reactance to regulatory policies. Respondents in the UK and Germany were asked about their attitudes to a vaccine mandate, a speed limit, new taxes on alcohol and meat and other measures. Half of the participants were asked for their view on measures about to be implemented, while the other half were told that the new regulations had already been in place for a year.
Resistance is often less robust than feared by policymakers
Both the real surveys and the experiments show that reactance to restrictive measures is much stronger prior to their introduction than afterwards. This is true regardless of test subjects’ attitudes to the specific issue, for example to vaccines. “Reactance is often only temporary and declines substantially after the introduction of restrictive measures,” says study leader Dr. Armin Granulo. “Resistance is less robust than many politicians fear.”
What causes this effect? The researchers suspected that a known mechanism of our perception was involved: When confronted by change, people focus more on the change itself than on the prevailing state before and after the change. But once the transitional process is complete, they can view the new condition more impartially.
Psychologist Prof. Robert Böhm explains: “When a new rule is announced, people initially focus on what they will lose: freedom, habitual behavior, comfort. After the introduction, these personal losses recede into the background. We are then much more conscious of the societal gains, for example for public health or climate protection.”
With their experiments the researchers were able to confirm that this mechanism is an important cause of reactance. Among other questions, they asked the test subjects how much they felt the measures would restrict their personal freedom and whether they were more focused on the personal or societal consequences. The test subjects who were told that measures were already in place showed attitudes that were dominated less by individual concerns and more by the societal situation as compared to the subjects in the experiment based on an impending measure.
Emphasizing societal benefits
The study also points to ways of communicating new measures more effectively. Prof. Christoph Fuchs says: “In one experiment we stressed the societal benefits of a systemic measure before it was introduced. The study participants who learned about the benefits at the beginning were much less inclined to reject a measure prior to its introduction.”
The researchers see these insights as an important basis for societal debates and for policy makers and recommend research into further psychological factors that might influence reactance. “Regulatory measures are not the only way of overcoming societal challenges. But they are an important component,” says Armin Granulo. “Those who are aware of the psychological mechanisms will have a better understanding of how people react, the course of public debate and the prospects of new laws succeeding. They can then be guided by these insights.”
Publication:
Granulo, A., Fuchs, C., & Böhm, R. (2025). Psychological reactance to system-level policies before and after their implementation. Proceedings of the National Academy of Sciences (PNAS). DOI: 10.1073/pnas.2409907122
https://doi.org/10.1073/pnas.2409907122
Subject matter expert:
Dr. Armin Granulo
Technical University of Munich (TUM)
Chair of Marketing
Tel.: +49 176 21106960
armin.granulo@tum.de
Please note: Dr. Armin Granulo has been working at the Ludwig-Maximilians-Universität München since May 1, 2025.
TUM Corporate Communications Center contact:
Klaus Becker
Media relations
Tel.: +49 89 289 22798
klaus.becker@tum.de
The Technical University of Munich (TUM) is one of the world’s leading universities in terms of research, teaching and innovation, with around 700 professorships, 53,000 students and 12,000 staff. TUM’s range of subjects includes engineering, natural and life sciences, medicine, computer sciences, mathematics, economics and social sciences. As an entrepreneurial university, TUM envisages itself as a global hub of knowledge exchange, open to society. Every year, more than 70 start-ups are founded at TUM, which acts as a key player in Munich’s high-tech ecosystem. The university is represented around the world by its TUM Asia campus in Singapore along with offices in Beijing, Brussels, Mumbai, San Francisco and São Paulo. Nobel Prize laureates and inventors such as Rudolf Diesel, Carl von Linde and Rudolf Mößbauer have conducted research at TUM, which was awarded the title of University of Excellence in 2006, 2012 and 2019. International rankings regularly cite TUM as the best university in the European Union.