Digital platforms

Chilean authorities are testing an unofficial “independence rule” that forbids digital platforms from exerting further influence over how business users set their own prices through most-favored-nation clauses. Manuel Abarca Meza assesses how this rule could potentially fit into antitrust case law and whether or not it effectively weighs the risks against market efficiencies.

Following a decade of declining youth mental health, many states have attempted to limit children’s access to social media and the internet by banning smartphones in schools. In new research, Henry Saffer finds no evidence that in-school smartphone bans have any effect on the screentime or mental well-being of young Americans.

In new research, Cailtin K. Myers and Ezekiel Hooper find that birth rates in the United States have declined as a result of the introduction of the iPhone. They theorize that the smartphone is crowding out the market for attention, offering a device to fill users’ time that replaces forming in-person relationships that typically create children. 

In new research, Louis Pape and Michelangelo Rossi find that the European Union’s Digital Markets Act’s prohibition on self-preferencing had little effect on the popularity of Google Maps relative to competitors. User preference for the incumbent service appears to outweigh frictional barriers to access.

In new research in collaboration with Color of Change, Dante Donati and Lena Song find that comments on social media posts help drive platform engagement for organizations. However, comment sections are often populated by a vocal minority, and adversarial comments from them come with reduced off-platform support for the original posters.

Across three studies, Jana Friedrichsen, Julia Schwarz, and Michel Clement explore how generative AI will change the music industry. They find that while consumers enjoy and even prefer AI-generated music, preferences shift upon learning that the song was AI-generated.

In new research providing the first systematic evidence on public notices, Kimberlyn Munevar, Anya Nakhmurina, and Delphine Samuels examine how Florida's 2023 law allowing local governments to stop publishing public notices in newspapers has affected citizen engagement in local governance.

Online degrees are reshaping higher education by lowering tuition prices and reducing in-person program availability. In new research, Nano Barahona, Cauê Dobbin, and Sebastián Otero find that Brazil’s high online enrollment benefits those who need cheaper and more flexible options, but ultimately hurts young undergraduate students who are shifting away from higher-value in-person education options.

In new research, Muxin Li and Ksenia Shakhgildyan examine the 2018 “brand gating” agreement between Apple and Amazon and how it impacted competition and consumer welfare on Amazon’s platform.

Jérémie Haese and Christian Peukert present new empirical findings on core open source technologies for the web and AI. Open source holds promise for making AI systems more transparent and secure, but it risks masking continued centralized control under the guise of openness.