Early Identification of DLD in Paediatric Practice: A Pilot Validation of the CLAP Screening Tool in Italian Outpatient Settings.

This is a pilot. Each age group had only 50 children, so the accuracy figures rest on small numbers and need confirming in a larger, more representative sample. Families worried about their child's language may have been more likely to take part, so the 24% who were rated as having a language difficulty is probably an overestimate and should not be read as a prevalence figure. Background factors such as bilingual exposure and family history were recorded but never analysed, so how the tool behaves in multilingual children is unknown. In the 36-42 and 48-54 month versions the chosen cut-off only identifies children with very low scores, so milder or borderline difficulties are likely to be missed. Pushing the cut-off towards sensitivity means more false positives, so more unnecessary referrals and more pressure on families and speech-language services. The 60-72 month version failed and the authors say it needs substantial revision before routine use.

The authors declare no conflicts of interest and state that they have nothing to report on funding. The tool was developed by the research group itself, and the paper notes that a larger validation and implementation phase is already planned, alongside a survey of primary care paediatricians. The literature review behind the item selection is described as unpublished data from the University of Turin speech therapy degree programme.

Do not read the 24% as the prevalence of developmental language disorder. The authors say it is the proportion of children in this pilot who needed further clinical attention, and that worried families choosing to take part may have pushed it up. Do not use the 60-72 month version either, because diagnostic accuracy there was poor and sensitivity fell to zero after item reduction.