GJB2 and infection: The objective of the present study was to explore EF, pragmatic skills, and mental ill health in children with an acquired deafness (cCMV infection) using CI and who have no known additional diagnoses like ADHD, Developmental Language Disorder (DLD), or Autism-Spectrum-Disorder (ASD) and compare this to well-matched controls who were deafened due to a genetic non-syndromic deafness (Cx26 mutations).