Adapting the behavioral regulation in active commuting to and from school questionnaire in Sweden: BR-ACS(SWE) Burgueño, Rafael Chillón Garzón, Palma Motivational forms Quality of motivation Self-determination continuum Active school transportation Active transport to school Children This work was supported by Vinnova, Sweden innovation agency [grant number 2018-04174]. In addition, Rafael Burgue˜no was partic- ularly supported by a Margarita Salas postdoctoral fellowship (grant number: RR_A_2021_02) from the Spanish Ministry of Universities. Although growing attention has been paid to motivation in explaining active travel to school among young people at the international level, no measures of motivation for active commuting to school (ACS) were found in Sweden. Guided by self-determination theory, this research aimed to adapt the Behavioral Regulation in Active Commuting to and from School (BR-ACS) questionnaire to the Swedish context and test the resulting version’s psychometric properties. The purposive and cross-sectional sample included 273 students (58 % girls, aged 10–12 years) from four Swedish urban schools. Results from confirmatory factor analyses psychometrically supported the six-factor correlated model (intrinsic motivation, integrated regulation, identified regulation, introjected regulation, external regulation, and amotivation) and the hierarchical three-factor model (autonomous, controlled motivation, and amotivation), which were invariant across gender. Latent correlations underpinned a symplex-like pattern. Discriminant and convergent validity and reliability were gathered. Criterion validity evidence was met with positive associations from intrinsic motivation, integrated and identified regulation to ACS, and a negative relationship between amotivation and ACS. The Swedish version of the BR-ACS questionnaire is a valid and reliable measure of children’s motivation toward ACS. 2023-11-29T11:25:37Z 2023-11-29T11:25:37Z 2022-12 info:eu-repo/semantics/article R. Burgueño et al. Adapting the behavioral regulation in active commuting to and from school questionnaire in Sweden: BR-ACS(SWE). Transportation Research Interdisciplinary Perspectives 16 (2022) 100721. [https://doi.org/10.1016/j.trip.2022.100721] https://hdl.handle.net/10481/85922 10.1016/j.trip.2022.100721 eng http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Atribución 4.0 Internacional Elsevier