Seffetullah Kuldas

About

I am a Postdoctoral Fellow, in the Department of Psychology at the Norwegian University of Science and Technology (NTNU), currently involved in the Trondheim Early Secure Study (TESS). TESS is a longitudinal study examining how psychosocial development, mental health, and health behaviours change from childhood through adolescence and into emerging adulthood. My research focuses on identifying individual and environmental factors underlying the dynamic relationships between physical activity and sleep.

Research

TESS

Trondheim Early Secure Study (TESS)

Started in 2007, TESS is a longitudinal study following a sample of 1,250 children born in 2003 and 2004, along with their parents, in Trondheim, Norway.

Publications

2025

Kuldas, Seffetullah; Ranum, Bror Morten; Aspvik, Nils Petter; Wichstrøm, Lars; Steinsbekk, Silje. (2025) Physical Activity, Sedentary Time, and Sleep from Childhood to Young Adulthood: A Seven-Wave Cohort Study of Within-person Relations - PubMed. Sleep
Academic article

2024

Feijóo, Sandra; Kuldas, Seffetullah; Sargioti, Aikaterini; Kinahan, Angela; Heaney, Darran; Gorman, Alan. (2024) A Test of Dublin Anti-bullying Self-Efficacy Scale for Teachers (DABSE-T). International Journal of Bullying Prevention
Academic article

2023

Laffan, Derek A.; Kuldas, Seffetullah; Sciacca, Beatrice; Norman, James O'Higgins; Milosevic, Tijana. (2023) Children’s and Parents’ Worries About Online Schooling Associated With Children’s Anxiety During Lockdown in Ireland. International Journal of Communication
Academic article
Kuldas, Seffetullah; Sargioti, Aikaterini; Norman, James O'Higgins; Staksrud, Elisabeth. (2023) A Transactional Framework of Parenting for Children’s Internet Use: A Narrative Review of Parental Self-Efficacy, Mediation, and Awareness of Online Risks. International Journal of Communication
Academic article
Kuldas, Seffetullah; Sargioti, Aikaterini; Staksrud, Elisabeth; Heaney, Darran; Norman, James O'Higgins. (2023) Are Confident Parents Really Aware of Children’s Online Risks? A Conceptual Model and Validation of Parental Self-Efficacy, Mediation, and Awareness Scales. International Journal of Bullying Prevention
Academic article
Foody, Mairéad; Kuldas, Seffetullah; Sargioti, Aikaterini; Mazzone, Angela; Norman, James O'Higgins. (2023) Sexting behaviour among adolescents: Do friendship quality and social competence matter?. Computers in Human Behavior
Academic article
Kuldas, Seffetullah; Sargioti, Aikaterini; Norman, James O'Higgins. (2023) Dublin Anti-Bullying Self-Efficacy Scales: Bifactor and Item Response Theory Models. Journal of Interpersonal Violence
Academic article

2022

Milosevic, Tijana; Kuldas, Seffetullah; Sargioti, Aikaterini; Laffan, Derek A.; Norman, James O’Higgins. (2022) Children’s internet use, self-reported life satisfaction, and parental mediation in Europe: An analysis of the EU kids online dataset. Frontiers in Psychology
Academic article
Sargioti, Aikaterini; Kuldas, Seffetullah; Foody, Mairéad; Otero, Paloma Viejo; Kinahan, Angela; Canning, Colm. (2022) Dublin Anti-Bullying Self-Efficacy Models and Scales: Development and Validation. Journal of Interpersonal Violence
Academic article

Journal publications

Kuldas, Seffetullah; Ranum, Bror Morten; Aspvik, Nils Petter; Wichstrøm, Lars; Steinsbekk, Silje. (2025) Physical Activity, Sedentary Time, and Sleep from Childhood to Young Adulthood: A Seven-Wave Cohort Study of Within-person Relations - PubMed. Sleep
Academic article
Feijóo, Sandra; Kuldas, Seffetullah; Sargioti, Aikaterini; Kinahan, Angela; Heaney, Darran; Gorman, Alan. (2024) A Test of Dublin Anti-bullying Self-Efficacy Scale for Teachers (DABSE-T). International Journal of Bullying Prevention
Academic article
Laffan, Derek A.; Kuldas, Seffetullah; Sciacca, Beatrice; Norman, James O'Higgins; Milosevic, Tijana. (2023) Children’s and Parents’ Worries About Online Schooling Associated With Children’s Anxiety During Lockdown in Ireland. International Journal of Communication
Academic article
Kuldas, Seffetullah; Sargioti, Aikaterini; Norman, James O'Higgins; Staksrud, Elisabeth. (2023) A Transactional Framework of Parenting for Children’s Internet Use: A Narrative Review of Parental Self-Efficacy, Mediation, and Awareness of Online Risks. International Journal of Communication
Academic article
Kuldas, Seffetullah; Sargioti, Aikaterini; Staksrud, Elisabeth; Heaney, Darran; Norman, James O'Higgins. (2023) Are Confident Parents Really Aware of Children’s Online Risks? A Conceptual Model and Validation of Parental Self-Efficacy, Mediation, and Awareness Scales. International Journal of Bullying Prevention
Academic article
Foody, Mairéad; Kuldas, Seffetullah; Sargioti, Aikaterini; Mazzone, Angela; Norman, James O'Higgins. (2023) Sexting behaviour among adolescents: Do friendship quality and social competence matter?. Computers in Human Behavior
Academic article
Kuldas, Seffetullah; Sargioti, Aikaterini; Norman, James O'Higgins. (2023) Dublin Anti-Bullying Self-Efficacy Scales: Bifactor and Item Response Theory Models. Journal of Interpersonal Violence
Academic article
Milosevic, Tijana; Kuldas, Seffetullah; Sargioti, Aikaterini; Laffan, Derek A.; Norman, James O’Higgins. (2022) Children’s internet use, self-reported life satisfaction, and parental mediation in Europe: An analysis of the EU kids online dataset. Frontiers in Psychology
Academic article
Sargioti, Aikaterini; Kuldas, Seffetullah; Foody, Mairéad; Otero, Paloma Viejo; Kinahan, Angela; Canning, Colm. (2022) Dublin Anti-Bullying Self-Efficacy Models and Scales: Development and Validation. Journal of Interpersonal Violence
Academic article

Språkvelger

Seffetullah Kuldas