Laia Castro Herrero

Photo: John Flury


I am an assistant professor at the Faculty of Communication at Universitat Internacional de Catalunya - Barcelona and a postdoctoral researcher at the Department of Communication & Media Research at University of Zurich. I do empirical work on political communication, comparative media research & public opinion, with a particular focus on cross-cutting exposure and communication across political lines. I hold a Ph.D. in Social Sciences from the University of Fribourg, and studied Political Science at University Pompeu Fabra (BA) and Political Communication and Marketing at Universitat Autònoma de Barcelona (MA). For more than seven years I have also worked as a political advisor and assistant at several Catalan institutions.

You can see my cv in here and visit my profiles at Google Scholar, UniZurich and GitHub


Recent publications


Castro, Laia. "Measuring Partisan Media Bias Cross‐Nationally." Swiss Political Science Review 27, no. 2 (2021): 412-433.


Castro, Laia, Jesper Strömbäck, Frank Esser, Peter Van Aelst, Claes de Vreese, Toril Aalberg, Ana S. Cardenal et al. "Navigating high-choice European political information environments: A comparative analysis of news user profiles and political knowledge." The International Journal of Press/Politics (2021): 19401612211012572.

Heiberger, Raphael, Silvia Majó-Vázquez, Laia Castro Herrero, Rasmus K. Nielsen, and Frank Esser. "Do Not Blame the Media! The Role of Politicians and Parties in Fragmenting Online Political Debate." The International Journal of Press/Politics (2021): 19401612211015122.


Humprecht, Edda, Laia Castro Herrero, Sina Blassnig, Michael Brüggemann, and Sven Engesser. "Media Systems in the Digital Age: An Empirical Comparison of 30 Countries." Journal of Communication (2022).


Steppat, Desiree, Laia Castro Herrero, and Frank Esser. "Selective exposure in different political information environments–How media fragmentation and polarization shape congruent news use." European Journal of Communication (2021): 02673231211012141.

Theocharis, Yannis, Ana Cardenal, Soyeon Jin, Toril Aalberg, David Nicolas Hopmann, Jesper Strömbäck, Laia Castro et al. "Does the platform matter? Social media and COVID-19 conspiracy theory beliefs in 17 countries." new media & society (2021): 14614448211045666.


Van Aelst, Peter, Fanni Toth, Laia Castro, Václav Štětka, Claes de Vreese, Toril Aalberg, Ana Sofia Cardenal et al. "Does a crisis change news habits? A comparative study of the effects of COVID-19 on news media use in 17 European countries." Digital Journalism 9, no. 9 (2021): 1208-1238.


Some of my coauthors are...


Toril Aalberg

Sina Blassnig

Michael Brüggemann

Florin Büchel

Ana Sofia Cardenal

Sven Engesser

Frank Esser

Raphael Heiberger

David Nicolas Hopmann

Edda Humprecht

Tarik Jusic

Silvia Majó Vázquez

Davor Marko

Lilach Nir

Manuel Puppis

Morten Skovsgaard

Agnieszka Stepinska

Desiree Steppat

Vaclav Stetka

Jesper Strömbäck

Yannis Theocharis

Fanni Toth

Peter Van Aelst

Claes de Vreese


Selected teaching


Fall semester 2021 Lecture "Anàlisi d'Audiències" (BA Degree, Universitat Internacional de Catalunya)

Fall semester 2020 Research seminar "Plus ça change, plus c'est la même chose? Political communication in multi-platform media environments" (BA Degree, University of Zurich)

Spring semester 2020 Seminar "Comparative Political Communication Research" (BA Degree, University of Zurich)

Fall semester 2019 Seminar "Studying Political Communication and Public Opinion in the Digital Age" (BA Degree, University of Zurich)

Fall semester 2019 Seminar "Medien, Politik und öffentliche Meinung" (BA Degree, University of Zurich)