A randomized controlled trial into the effectiveness of a mobile health application (SAM) to reduce stress and improve well-being in autistic adults.

The study population was heavily skewed towards Dutch, female, intellectually able adults with autism who were diagnosed in adulthood, which limits generalizability to other autistic groups. The follow-up period was only four weeks, which may be too short to capture the full effects of habit formation or long-term stress reduction. There was no blinding of participants, which is inherent to this type of intervention but may introduce bias. A significant portion of the intervention group found the app itself to be a source of stress, indicating a potential adverse effect that needs careful consideration in clinical recommendation. Most participants did not show a reliable clinical change, meaning the average statistical significance may not translate to meaningful individual benefit for many users.

The SAM intervention was developed by GGz Centraal, a mental health care organization. One author (YR) has no commercial or financial interests in it. The study was funded by the Dutch Research Council (NWO).

Do not interpret the statistically significant group differences as evidence that the app works for most individuals. The effect sizes were small, and 85% of participants did not experience a reliable change in their outcomes. Additionally, 43% of users reported the app increased their stress, so it is not a universally benign tool.