“…Thus far, studies focused on related elements like attitudes (Kaiser, Bernauer, Sunstein, & Reisch, 2020;Kuhn, Ihmels, & Kutzner, 2021;Taube & Vetter, 2019;Vetter & Kutzner, 2016) and preferences (Venema, Kroese, Benjamins, & De Ridder, 2020;Venema, Kroese, De Vet, & De Ridder, 2019), but not on motivation itself. Based on Self-Determination Theory , we focused on autonomous and controlled motivation.…”