Mayo Clinic smartwatch system helps parents shorten and defuse children's severe tantrums early

(Press-News.org) ROCHESTER, Minn. — Mayo Clinic researchers have developed a smartwatch-based alert system that signals parents at the earliest signs of a tantrum in children with emotional and behavioral disorders — prompting them to intervene before it intensifies.  

In a new study published in JAMA Network Open, these alerts helped parents intervene within four seconds and shortened severe tantrums by an average of 11 minutes — about half the duration seen with standard therapy.  

In this system, a smartwatch worn by the child detects physiological stress signals, such as rising heart rate, or changes in movement or sleep, and sends them to an artificial intelligence (AI)-enabled app on the parent's smartphone. The app analyzes the data in real time and sends an alert as a cue for the parent to connect with their child. 

The findings demonstrate how smartwatch technology can help bridge a gap in pediatric mental healthcare by giving parents actionable support when professional help isn't immediately available. That need is widespread — nearly 1 in 5 U.S. children has a mental, behavioral or emotional health disorder, according to the Centers for Disease Control and Prevention.  

The approach shows how wearable technology, paired with patient-centric AI design, can support families beyond the clinic. 

Study design and results  In the randomized clinical trial, 50 children aged 3 to 7 receiving Parent-Child Interaction Therapy at Mayo Clinic participated over 16 weeks. Half were assigned to use the smartwatch system, and half continued standard therapy. The study evaluated whether families would use the technology as intended and whether immediate alerts could measurably change parent response times and children's behavior. 

Notably, children wore the smartwatch for about 75% of the study period, demonstrating feasibility and family engagement. 

"This study shows that even small, well-timed interventions can change the trajectory of a child's emotional dysregulation episode," says Magdalena Romanowicz, M.D., a Mayo Clinic child psychiatrist who co-led the study. "These moments give parents a chance to step in with supportive actions — moving closer, offering reassurance, labeling emotions and redirecting attention before a tantrum intensifies." 

Building on earlier research  This work builds on the team's earlier study, which used a machine learning algorithm to analyze smartwatch data — including heart rate, sleep and movement — to predict disruptive behaviors in hospitalized children receiving psychiatric care. 

That study, published in the Journal of Child and Adolescent Psychopharmacology, showed the algorithm could predict a child's behavioral state with 81% accuracy and provided a 30- to 60-minute advance warning of an impending outburst. 

"This work shows how basic science and clinical research can come together to transform patient care," says Arjun Athreya, Ph.D., who co-led the study and serves on the engineering faculty in Mayo Clinic's Department of Molecular Pharmacology and Experimental Therapeutics. "We've translated inpatient findings to outpatient care, and the results show how data from everyday smart devices can help families in real time." 

Empowering families with data-driven care  Paul Croarkin, D.O., a Mayo Clinic child and adolescent psychiatrist and study co-author, says the findings highlight the power of data-driven care. "A smartwatch may seem simple, but when it's backed by evidence-based treatments and advanced analytics, it becomes a lifeline for families trying to manage severe behavioral symptoms at home."  

Julia Shekunov, M.D., medical director of Mayo Clinic's Child and Adolescent Psychiatry Inpatient Unit and also a study co-author, says the work addresses an urgent need. "We're seeing more children in crisis, and the severity is increasing. This system gives parents tools they can use immediately, even outside the clinic, to help their child regain control." 

Next steps  Future studies will refine the system's predictive accuracy, test it in larger groups and assess its long-term benefits in routine outpatient care. 

This study was funded in part by a Mayo Clinic Clinical Trial Stimulus Fund and Mayo Clinic's Center for Individualized Medicine. For a complete list of authors, disclosures and funding, review the study.    

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