Prof Daniela O\’Neill



English, French, Swiss German

Research Focus

I am a child development scientist and expert on children’s talk and how their social pragmatic communication grows. As part of my research, I developed the standardized parent-report measure, the Language Use Inventory (LUI), to help speech-language pathologists, child language researchers, and other child development and health professionals assess early social communication in 18- to 47-month-old children. Its psychometrics has been extensively supported in studies with both neurotypical & neurodiverse children (see The LUI is now used in over 1500 institutions worldwide and over 20 translations are underway. In 2022, we will embark on a 2-year project to evaluate the use of the LUI for developmental surveillance of 2-year-olds’ language within family physician practices. I am the Director of the Children’s Communication Lab at the University of Waterloo. You can find out more about the research, publications, and outreach projects of my lab by visiting

Research Groups

  • Children's Communication Lab


  • Implementation of the online Language Use Inventory (LUI) for developmental surveillance of children’s early language development by family physicians


  • Professor

Global goals

Target 4.2


  • Canada