Background: Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by symptoms of inattention and/or hyperactivity/impulsivity that are persistent across situations and time. ADHD in adulthood, with an estimated prevalence of 2 - 3 %, is associated with challenges that may have severe consequences on their daily life functioning. Still, the availability of evidence-based psychological interventions is limited. Interventions delivered over the Internet is promising, because it may increase the availability of effective psychological interventions for a larger group of adults with ADHD. However, studies show that lack of sustained adherence is a challenge in self-guided internet interventions. Digital reminders may help increase adherence and engagement in these interventions.~Objectives: The overall aim of this study is to investigate adherence and effects of a self-guided Internet-delivered intervention for adults with an ADHD diagnosis. More detailed, we will examine whether the use of reminders will increase adherence and engagement in the intervention, and consequently how this affect intervention effects.~Methods: The study uses a micro-randomized design. A total of 100 participants with an ADHD diagnosis will be included. Primary measure is adherence (completed modules) and participant feedback regarding self-reported engagement. Secondary clinical outcomes: inattention and hyperactivity/impulsivity measured by two subscales from the Adult ADHD Self-Rating Scale (ASRS); quality of life measured by Adult ADHD Quality of Life Measure (AAQol); stress measured by the Perceived Stress Scale (PSS); cognitive functioning measured with the Perceived Deficit Questionnaire (PDQ-5), and self-compassion measured by the Self compassion-Scale - short form (SCS-SF). We will use quantitative statistical procedures and qualitative methods to analyze the data.~Discussion: The results from the study will contribute to the growing research on Internet-delivered interventions. The expected results may have a major impact on further development of treatment options for adults with ADHD. Moreover, investigating ways to increase adherence in online self-guided programs could be of great value when implementing such intervention into routine care.
Background: Attention deficit hyperactivity disorder (ADHD) is a neurodevelopmental disorder characterized by symptoms of inattention and/or hyperactivity/impulsivity that are persistent across situations and time. ADHD in adulthood, with an estimated prevalence of 2 - 3 %, is associated with challenges that may have severe consequences on their daily life functioning. Still, the availability of evidence-based psychological interventions is limited. Interventions delivered over the Internet is promising, because it may increase the availability of effective psychological interventions for a larger group of adults with ADHD. However, studies show that lack of sustained adherence is a challenge in self-guided internet interventions. Digital reminders may help increase adherence and engagement in these interventions.