Childhood mental health conditions such as ADHD, anxiety, and depression affect 13- 20% of children, yet 25-62% go undetected and untreated. Pediatric digital phenotyping could add objective signal, but prior work has largely tested single modalities, leaving open which signals matter most and whether combining them helps. We analyzed electrodermal, cardiovascular, temperature, movement, and speech (acoustic and linguistic) data from 103 children aged 4-8 during a ∼7-minute structured behavioral…
