Bornas, Xavierde la Torre-Luque, AlejandroFiol-Veny, AinaBalle, Maria2024-07-112024-07-112017-05Bornas X, De La Torre-Luque A, Fiol Veny AM, Balle M. Trajectories of anxiety symptoms in adolescents: Testing the model of emotional inertia. Int J Clin Health Psychol. 2017 May;17(2):192-6. Epub 2017 Feb 4.1697-2600http://hdl.handle.net/20.500.13003/10945http://hdl.handle.net/20.500.12105/20380Background/Objective: Two predictions derived from a recently introduced model of psy chotherapy outcome were tested, assuming the dynamical relationship between the individual's emotional trajectory and the force of intervention necessary to change this trajectory: (a) only a high intensity treatment would succeed to lower the increasing trajectory of anxiety, and (b) high as well as low intensity treatments would equivalently lower the non -increasing trajectory of anxiety. Methods: Seventy-four adolescents (58.40% girls; M = 14.65 years, SD= 0.53) were randomly assigned to a high intensity treatment condition, a low intensity treatment condition, or a waiting list condition. Results: Only the high intensity treatment reduced the anxiety when participants showed an increasing trajectory (p < .01). None of the treatments reduced anxiety when a previously non -increasing trajectory was shown. Conclusions: These findings support the theoretical predictions and underscore the need to consider not only how severe the anxiety is but also the time course of anxiety in applied treatment settings.enghttp://creativecommons.org/licenses/by-nc-nd/4.0/TrajectoryAnxietyEmotional inertiaTreatment energyEx post facto studyresearch articleAttribution-NonCommercial-NoDerivatives 4.0 International30487894172192-19610.1016/j.ijchp.2017.01.0021576-7329International Journal of Clinical and Health Psychologyopen access2-s2.0-85011411566403132100010