Skip down to main content

Dr Hiroyuki Egami

Visiting Research Fellow
Hiroyuki Egami

Dr Hiroyuki Egami

Visiting Research Fellow

Profile Contents

About

Hiroyuki Egami is a Visiting Research Fellow at the Oxford Internet Institute, an Affiliated Researcher at Otaru University of Commerce, and a JSPS Scientist for Joint International Research. His research sits at the intersection of digital technology and human behaviour, with a particular focus on how video gaming affects mental well-being across the full age spectrum. Hiroyuki places special emphasis on identifying the causal mechanisms behind these effects and on understanding how they vary across individuals and environments. He aims to translate these empirical insights into practical applications — helping people engage with digital media in healthier ways and make choices that better support their own well-being.

To generate rigorous causal evidence, he combines natural experiments — leveraging random real-world events in everyday life — with advanced econometric methods. His work draws on a unique collection of natural-experimental datasets from diverse contexts and populations. Driven by a broader commitment to accumulating robust evidence on digital technology and human behaviour, his work has appeared in journals including Nature Human Behaviour and World Development Sustainability, and has attracted wide media attention across more than 100 international outlets.

Hiroyuki holds a PhD in Advanced Policy Studies from the National Graduate Institute for Policy Studies (Japan) and a Master of Public Policy from the University of Chicago, and previously spent a decade at the Bank of Japan.

Positions at the OII

  • Visiting Research Fellow, October 2025 -
Privacy Overview
Oxford Internet Institute

This website uses cookies so that we can provide you with the best user experience possible. Cookie information is stored in your browser and performs functions such as recognising you when you return to our website and helping our team to understand which sections of the website you find most interesting and useful.

Strictly Necessary Cookies
  • moove_gdrp_popup -  a cookie that saves your preferences for cookie settings. Without this cookie, the screen offering you cookie options will appear on every page you visit.

This cookie remains on your computer for 365 days, but you can adjust your preferences at any time by clicking on the "Cookie settings" link in the website footer.

Please note that if you visit the Oxford University website, any cookies you accept there will appear on our site here too, this being a subdomain. To control them, you must change your cookie preferences on the main University website.

Google Analytics

This website uses Google Tags and Google Analytics to collect anonymised information such as the number of visitors to the site, and the most popular pages. Keeping these cookies enabled helps the OII improve our website.

Enabling this option will allow cookies from:

  • Google Analytics - tracking visits to the ox.ac.uk and oii.ox.ac.uk domains

These cookies will remain on your website for 365 days, but you can edit your cookie preferences at any time via the "Cookie Settings" button in the website footer.