Research indicates that children as young as 7-8 years old are able reporters of their own mental health. In community setting (particularly schools), self-report measurement supports screening for problems and early intervention. The measure consists of 16 items; 10 of which comprise the emotional difficulties subscale and 6 the behavioural difficulties subscale.
Deighton, Patalay, Vostanis, Tymms, Humphrey, Belsky, Wolpert and Fonagy