Stefan Elbers

183 AGRIPPA: protocol for an RCT as loyalty, friendship, or adventurousness in relation to a goal of going hiking with old classmates), and, optionally, a reward once the goal has been achieved. In the final part, patients can plan multiple “steps,” comprising single or recurrent activities that need to be performed to achieve the corresponding goal (e.g., buying hiking shoes or planning a weekly training session). For each step, patients plan where and when the specific activity will be performed. They can also add reminders or schedule each step in their mobile calendar. In the final part of the step-planning sequence, patients reflect on potential barriers and formulate coping strategies in anticipation of these barriers (e.g., preparing dinner in advance to avoid missing a training session). If a goal has been achieved, patients can directly create an Insight Card of this particular experience. Figure 1 (middle) shows an overview of steps within a specific goal. Figure 1. Three Screenshots From the AGRIPPA app. Notes: Left: example of an insight card, including a related photo, title, two associated values, and description. Middle: Overview of a fictitious goal to go for a hike, including three steps and a related insight. Right: Overview screen of the education and information module. The first row includes treatment-specific exercises, the second row includes general information about the app, and the third row includes links to other support materials. Component 3: Information and Education. By default, the Information and Education module includes general information about the AGRIPPA project and instructions on how to use both strategies. In addition, each treatment center can add specific content to this section, including information materials, website links, figures, embedded videos, and