A randomized controlled trial on COGITO, a free self-help smartphone app to enhance mental well-being.

Background: Smartphone apps may help to prevent the transition from minor to severe mental health problems. We compared a free self-help smartphone app (COGITO; www.uke.

Prevalence of body-focused repetitive behaviors in a diverse population sample - rates across age, gender, race and education.

Background: Prevalence estimates for body-focused repetitive behaviors (BFRBs) such as trichotillomania differ greatly across studies owing to several confounding factors (e.g. different criteria).