Online Memory Intervention for Individuals with Traumatic Brain Injury

The 16-week intervention is completed daily, 5 days/week, remotely from home on a designated study website. Each week participants learn a new city through navigation tasks which increase in difficulty day-to-day and have a total of 4 levels of difficulty, with the goal of being able to independently navigate the city by the end of the week via Google Street View. Participants complete end-of-day multiple-choice tasks, testing what they learned with 3 types of allocentric questions: 1) predicting the next street/landmark, 2) distance judgement and 3) vector mapping. Participants also complete a map placement task, which involves reporting the locations of all studied landmarks/streets. Participants are presented with auditory rewards in the forms of short audio clips about landmarks, written encouragement in the form pop-ups (e.g., "Good work, keep it up!"), and coffee card rewards based on adherence to the intervention (e.g.,$5 bi-weekly if 100% of intervention is completed).

The 16-week active control, remote video intervention is completed daily, 5 days a week by participants on a designated website. Participants placed in the active control group are trained on educational topics by watching videos of Ted Talks, to control for the effects of generalized environmental enrichment of the same dose as targeted navigation training. For each day of training, participants are asked to select between an option of 2 possible videos, watching a total of three videos per day. To ensure compliance and sufficient attention to the videos, at the end of each video, participants are asked to rate 5 aspects of the content (relevance, interest, comprehensibility, complexity, informative), and speaker (persuasiveness, quality of delivery, facial expression, convincingness, captivation), on a scale of 1 (lowest) to 5 (highest). Additionally, as with remote navigation participants, they are given written and monetary rewards.