Towards a digital adolescent society? The social structure of the Icelandic adolescent blogosphere. - Thoroddur Bjarnason; Birgir Gudmundsson; Kjartan Ólafsson (New Media Soc., 2011)

Does the use of social networking sites increase children's risk of harm? - Elisabeth Staksrud; Kjartan Ólafsson; Sonia Livingstone (Comput. Hum. Behav., 2013)

Risky Social Networking Practices Among "Underage" Users: Lessons for Evidence-Based Policy. - Sonia Livingstone; Kjartan Ólafsson; Elisabeth Staksrud (J. Comput. Mediat. Commun., 2013)

Internet Addictive Behavior in Adolescence: A Cross-Sectional Study in Seven European Countries. - Artemis Tsitsika; Mari Janikian; Tim M. Schoenmakers; Eleni C. Tzavela; Kjartan Ólafsson; Szymon Wójcik; George Florian Macarie; Chara Tzavara; Clive Richardson (Cyberpsychology Behav. Soc. Netw., 2014)

EU Kids Online II Dataset: A cross-national study of children's use of the Internet and its associated opportunities and risks. - Sonia Livingstone; Kursat Cagiltay; Kjartan Ólafsson (Br. J. Educ. Technol., 2015)

Underage Use of Social Network Sites: It's About Friends. - Monica Barbovschi; Hana Machácková; Kjartan Ólafsson (Cyberpsychology Behav. Soc. Netw., 2015)

Excessive Internet Use and its association with negative experiences: Quasi-validation of a short scale in 25 European countries. - Katerina Skarupová; Kjartan Ólafsson; Lukas Blinka (Comput. Hum. Behav., 2015)

The effect of smartphone use on trends in European adolescents' excessive Internet use. - Katerina Skarupová; Kjartan Ólafsson; Lukas Blinka (Behav. Inf. Technol., 2016)

The mobile Internet: Access, use, opportunities and divides among European children. - Giovanna Mascheroni; Kjartan Ólafsson (New Media Soc., 2016)

CalmusWaves: Where Dancers Compose Music in Real-Time. - Kjartan Ólafsson (ICMC, 2017)

Is big brother more at risk than little sister? The sibling factor in online risk and opportunity. - Kjartan Ólafsson; Lelia Green; Elisabeth Staksrud (New Media Soc., 2018)

Time spent online and children's self-reported life satisfaction in Norway: The socio-ecological perspective. - Tijana Milosevic; Niamh Ni Bhroin; Kjartan Ólafsson; Elisabeth Staksrud; Sebastian Wachs (New Media Soc., 2024)

Digital play on children's terms: A child rights approach to designing digital experiences. - Sonia Livingstone; Kjartan Ólafsson; Kruakae Pothong (New Media Soc., 2025)

Do parents 'know best' when it comes to their teenaged children's experiences of sexual content online? - Harrison W. See; Kjartan Ólafsson; Brian O'neill; Lelia Green; Carmen Jacques; Kelly Jaunzems (New Media Soc., 2025)