ESPAD vs HCL-16 Psychologists and researchers often find it difficult to compare two sets of questionnaires like ESPAD (European School Survey Project on Alcohol and Drugs - Tobacco) and HCL-16 (Hypomania Checklist) due to the variability in the questions. The process of harmonising these two can be quite tedious and subjective. However, with the ‘ESPAD vs HCL-16’ comparison using the Harmony tool, this task becomes rather effortless. Harmony is an AI-based program specifically developed for psychologists to assist them in harmonising different items in various questionnaires. Using advanced algorithms and natural language processing, it can easily perform ‘ESPAD vs HCL-16’ comparisons by generating a percentage match between each item of the two sets. This allows the researchers to understand commonalities and discrepancies more efficiently and effectively. In order to test the consistency and differences of longitudinal analyses within and across various studies, ‘ESPAD vs HCL-16’ comparison can be really beneficial. Harmony’s database is inclusive of these instruments. Additionally, it even allows users to add their own questionnaires in PDF form for more personalised comparisons. One of the noteworthy features of Harmony is its ability to perform comparisons across multiple languages, making it a suitable tool for international research projects.