https://www.selleckchem.com/products/resatorvid.html 05). Psychological distress is common in HCWs during the COVID-19 outbreak. Hospitals and relevant departments should provide psychological support to HCWs, and strict infection control measures should be developed. Psychological distress is common in HCWs during the COVID-19 outbreak. Hospitals and relevant departments should provide psychological support to HCWs, and strict infection control measures should be developed. This study assesses the reliability and validity of the DSM-5-based, semi-structured (ILF-EXTERNAL). Participant data were drawn from the ongoing ESCAschool intervention study. The ILF-EXTERNAL was evaluated in a clinical sample of 474 children and adolescents (aged 6-12 years, 92 females) with symptoms of attention-deficit/hyperactivity disorder (ADHD). To obtain interrater reliability, the one-way random-effects, absolute agreement models of the intraclass correlation (ICC) for single ICC(1,1) and average measurements ICC(1,3) were computed between the interviewers and two independent raters for 45 randomly selected interviews involving ten interviewers. Overall agreement on DSM-5 diagnoses was assessed using Fleiss' kappa. Further analyses evaluated internal consistencies, item-total correlations as well as correlations between symptom severity and the degree of functional impairment. Additionally, parents completed the German version of the (CBCL) and two DSM-5-based parent questionnaires for thth the , indicating divergent validity. In clinically referred, school-age children, the ILF-EXTERNAL demonstrates sound psychometric properties. The ILF-EXTERNAL is a promising clinical interview and contributes to high-quality diagnostics of externalizing disorders in children and adolescents. In clinically referred, school-age children, the ILF-EXTERNAL demonstrates sound psychometric properties. The ILF-EXTERNAL is a promising clinical interview and contributes to high-quality diagnostics of exter