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Annenberg Public Policy Center of the University of Pennsylvania


Nearly half of adults mistakenly think benefits of daily aspirin outweigh risks

A new survey by the Annenberg Public Policy Center finds that nearly half of US adults incorrectly think taking a daily low-dose aspirin reduces heart attack and stroke risk. The survey reveals significant gaps in understanding about aspirin use among older adults, with younger respondents more likely to correctly assess the risks.

Most Americans favor school vaccination requirements, but support is rising for opt-out options

A new survey finds that nearly three-quarters of US adults support requiring children to be vaccinated against preventable diseases, while over half support prohibiting unvaccinated children from attending school. However, support for this prohibition has dropped significantly since the Covid-19 pandemic, and there is growing support f...

Media coverage of civilian casualties in allied countries boosts support for U.S. involvement

A new study finds that media coverage of civilian casualties increases public support for U.S. involvement in conflicts when the victims are from allied countries, evoking empathy and a sense of democratic justification. However, this effect is absent when civilians from non-allied nations are affected.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalHumanities and Social Sciences Communications·DateJan 6, 2025

Is 'bypassing' a better way to battle misinformation?

Researchers found that bypassing misinformation, by providing accurate information with positive implications, can be superior to correction in situations where people form beliefs rather than attitudes. This approach has potential for informing strategies to combat misinformation and change behavior. The study suggests a more nuanced ...

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalJournal of Experimental Psychology General·TypeExperimental study·DateNov 24, 2024

Communities can increase the prosocial tendencies of their authorities, study finds

Researchers found that witnessing community members engage in prosocial behaviors increases policymakers' willingness to support pro-social policies, such as syringe service programs. The study suggests that communities can exert a positive influence on authorities and contribute to the greater good.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalSocial Psychological and Personality Science·DateAug 1, 2024

Comprehensive meta-analysis pinpoints what vaccination strategies different countries should adopt

A comprehensive meta-analysis found that interventions increasing access to vaccines and providing transportation assistance tripled vaccination odds, particularly in low-income countries. Financial incentives also showed a moderate effect, but were less impactful.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalNature Human Behaviour·TypeMeta-analysis·DateAug 1, 2024

Public health beliefs predict support for climate action, study shows

A new study by Annenberg Public Policy Center researchers finds that science-consistent beliefs about climate change's public health effects predict support for climate policies. The study controlled for belief in climate change's existence and cause, highlighting the importance of grounded knowledge in promoting climate action.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalJournal of Health Communication·TypeSurvey·DateJun 25, 2024

Social media use is associated with more frequent vaccination

Researchers found a consistent positive relation between social media use and vaccination across all major political parties. For Democrats, social media exposure predicted greater vaccine uptake due to increased information about new pathogens. For Republicans, believing others were vaccinated was the key factor.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalSocial Science & Medicine·TypeSurvey·DateJun 24, 2024

Association found between media diet and science-consistent beliefs about climate change

A study found a strong association between media diet and science-consistent beliefs about climate change, with far-right media having a stronger negative impact on climate change beliefs and support for a carbon tax. Exposure to centrist and science media was positively associated with these beliefs.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalJournal of Health Communication·DateJun 10, 2024

APPC scholars find knowledge a factor in closing black-white COVID-19 vaccination gap

Research by APPC scholars found that increased knowledge about Covid-19 vaccination made a significant difference in reducing the disparity between Black and White Americans' vaccination rates. This increase was associated with improved trust in vaccine safety and efficacy, as well as reduced skepticism towards vaccines.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalJournal of Health Communication·TypeSurvey·DateMay 30, 2024

‘Politicians in robes’: How a sharp right turn imperiled trust in the Supreme Court

The Supreme Court's shift to the right has led to a significant erosion of public trust and legitimacy, with Democrats seeing the court as less legitimate and Republicans viewing it more positively. The court's dramatic change since the 2022 Dobbs ruling has polarized the public along partisan lines for the first time in decades.

Although trust in science remains high, public questions scientists’ adherence to science’s norms

A recent survey found that less than half of the U.S. public trusts scientists to overcome human and political biases. Despite high confidence in science overall, many question whether scientists live up to their values. The study highlights the need for trust to be earned through the scientific enterprise's efforts.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalProceedings of the National Academy of Sciences·TypeSurvey·DateMar 4, 2024

Experiencing record-breaking heat days affects perception of weather trends

A new study finds that experiencing record-breaking heat days increases perceptions that the weather is getting hotter, but has little effect on beliefs in climate change. Record-heat days can drive changes in the general perception that the weather is worsening, regardless of season or media coverage.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalScientific Reports·TypeSurvey·DateOct 11, 2023

Five factors that assess well-being of science predict support for increasing US science funding

A study by Annenberg Public Policy Center researchers identifies five factors assessing science's self-presentation and their impact on public support for increasing US science funding. The factors capture differences between conservatives' and liberals' perceptions of science, highlighting key differences in what matters to each group.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalProceedings of the National Academy of Sciences·DateSep 22, 2023

How to increase acceptance of an RSV vaccine? Explain the FDA’s vaccine approval process

A new study by the Annenberg Public Policy Center found that people are more likely to recommend an RSV vaccine if they understand the rigorous process of the FDA's vaccine approval process. The study showed that 57% of those exposed to a flowchart were very or somewhat likely to recommend the vaccine, compared to 40% in a control group.

Research identifies factors that make correcting misinformation about science more successful

A meta-analysis of 60,000 participants found that corrections are more successful when issues are emotionally positive, match ideology, and provide abundant details. However, polarized misinformation proves harder to correct, with corrections failing twice as often.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalNature Human Behaviour·TypeMeta-analysis·DateJun 20, 2023

Seasonal changes in adolescent suicide explain controversial ‘13 Reasons Why’ findings

Research by Dan Romer finds that seasonal fluctuations and other factors eliminate the apparent suicide contagion effect reported from the release of '13 Reasons Why'. The study also reveals a decline in adolescent suicide rates during summer months when youths are not in school.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalSuicide and Life-Threatening Behavior·TypeData/statistical analysis·DateDec 19, 2022

Targeting impulsivity early in adolescence could prevent later behavioral disorders

A new study suggests targeting early adolescent impulsivity could prevent later behavioral disorders. The research found that adolescents with high levels of impulsivity in early adolescence were at risk for developing antisocial personality disorder and alcohol use disorder.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalJournal of Adolescent Health·TypeObservational study·DateAug 9, 2022

The great and powerful Dr. Oz? Alternative health media consumption and vaccine views

A new study by researchers from the Annenberg Public Policy Center finds that exposure to alternative health media can affect beliefs about consequential health-care issues like vaccination. After Dr. Mehmet Oz endorsed the MMR (measles-mumps-rubella) vaccine on a March 2019 episode of “The Dr. Oz Show,” significantly more people in hi...

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalJournal of Communication·TypeSurvey·DateMar 29, 2022

The role of trust and knowledge in overcoming vaccination hesitancy

A study published in PNAS found that trust and knowledge about vaccination are stronger predictors of vaccination than Covid-specific factors. Background beliefs and behavior regarding vaccination in general were more than twice as predictive of the change in vaccination as beliefs about the pandemic itself.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalProceedings of the National Academy of Sciences·TypeSurvey·DateDec 22, 2021

Misplaced trust: When trust in science fosters pseudoscience

A new study reveals that people who trust science are more likely to believe and disseminate false claims containing scientific references. In contrast, reminding them of the value of critical evaluation reduces belief in false claims. The findings have implications for curbing misinformation during the COVID-19 pandemic.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalJournal of Experimental Social Psychology·DateJul 26, 2021

How news coverage affects public trust in science

A study found that exposure to negative news stories about science without context can damage public perceptions of trust and confidence in scientific work. The researchers tested the effects of different narratives on a large group of U.S. adults and found that those who read problem-focused stories were less likely to believe that sc...

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalPublic Understanding of Science·DateJun 1, 2021

Vaccine science and side effects: How news messages affect views on vaccination

A study by researchers at the Annenberg Public Policy Center found that news coverage of expert scientific evidence on vaccine safety increases public acceptance of vaccines. In contrast, personal narratives about real side effects diminish the positive effect of such messages. The experiment tested six video clips featuring experts an...

Gun violence rises in TV dramas over two decades, paralleling U.S. gun homicide trends

Research by the Annenberg Public Policy Center found that gun violence on popular prime-time TV dramas doubled from 2000 to 2018, with gun use substantially increasing and rising significantly as a proportion of the violence depicted in the shows. This trend parallels the rise in U.S. homicide deaths attributable to firearms.

Concerns over infecting others matter more for vaccination in sparsely populated areas

Researchers found that prosocial concerns drive higher vaccination rates in rural areas than urban ones. The study suggests emphasizing prosocial aspects of vaccination can reduce the rural-urban disparity in vaccination. Vaccination protects not only individuals but also communities, highlighting its social nature.

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalProceedings of the National Academy of Sciences·DateDec 21, 2020

Belief in conspiracy theories is a barrier to controlling spread of COVID-19

A new study reveals that believing in COVID-19 conspiracy theories predicts increased resistance to vaccination and preventive behaviors, including mask-wearing. The researchers found a widening gap between those who strongly believed in conspiracies and those who did not, with believers being less likely to wear masks and get vaccinated.

Justified and unjustified movie violence evokes different brain responses, study finds

A new study by researchers at the University of Pennsylvania found that scenes of unjustified and justified violence in movies activate different parts of the adolescent brain. Viewers show a synchronized response in the ventromedial prefrontal cortex when watching justified violence, suggesting they see it as acceptable for self- or f...

SourceAnnenberg Public Policy Center of the University of Pennsylvania·JournalFrontiers in Behavioral Neuroscience·DateDec 10, 2019