Internet-delivered CBT for Adolescents With GAD

Inclusion Criteria: * A score on the Penn State Worry Questionnaire for Children (PSWQ-C) of \> 30 * Fulfilling DSM-5 criteria for Generalized Anxiety Disorder * No other disorder or symptoms present in need of more urgent treatment * Aged between 13 and 17 years * Ability to read and write in Swedish * A parent or caregiver that is able to participate in the treatment * Participants on psychotropic medication must have been on a stable dose for the last 6 weeks prior to baseline assessment * No other ongoing psychological treatment for any disorder Exclusion Criteria: * The presence of symptoms suggestive of a current diagnosis of Autistic Spectrum Disorder, Schizophrenia, Bipolar Disorder, Anorexia Nervosa, Bulimia, or Substance Use Disorder * Present risk of suicide * Present occurrence of domestic violence * Completed CBT for any anxiety disorder within the last 6 months (defined as at least 5 sessions of CBT including in vivo exposure sessions)