When comparing psychological questionnaires such as the Center for Epidemiological Studies-Depression (CES-D) versus the Drug Use Disorders Identification Test (DUDIT), the process of harmonising the two sets of items can be challenging. The CES-D vs DUDIT exercise necessitates a keen analysis and careful alignment between the elements contained in each questionnaire. This is exactly where Harmony comes into play. Harmony is an effective tool developed for psychologists to simplify the process of harmonisation, even when it involves multiple languages or requires processing lengthy documents. Harmony exploits natural language processing and generative AI algorithms to dramatically accelerate harmonisation and ensure a more objective analysis. When comparing CES-D vs DUDIT, this means the software can objectively scan items from both questionnaires, comparing them to identify the degree of resemblance between the parameters assessed by both tools. Thus, with Harmony, CES-D vs DUDIT comparison becomes not only quicker but more fundamentally accurate, enhancing the validity of the research findings. Harmony’s web interface at https://harmonydata.ac.uk/app allows psychologists to either select from a database of already available tools or upload their own instruments in PDF form. This flexibility enhances the ease of using Harmony for a range of psychology research exercises, including those involving CES-D vs DUDIT. So, to enhance your research efficiency and boost your comparative analysis of psychometric tools, choose Harmony.