Harmony serves an invaluable tool for psychologists and researchers, greatly aiding in the process of comparing psychological assessments such as CES-D and PSD. A notable feature of the software is its ability to use natural language processing and generative AI models to harmonise questionnaire items, promising a significant reduction in both time and effort. The analysis it provides between CES-D (Center for Epidemiological Studies-Depression scale) and PSD (Psychopathy Screening Device), for instance, can offer fascinating insights into diverse areas of human psychology. Both CES-D and PSD are widely used tools, each providing an depth understanding of specific psychological experiences. The CES-D focuses on symptoms associated with depression, while the PSD offers insight into psychopathic behaviours and tendencies. The comparison of CES-D vs PSD is not an easy task, due to the nuanced elements and variables within each instrument. This is where Harmony becomes a game-changer, effectively streamlining and simplifying the painstaking process of harmonisation. By comparing CES-D vs PSD with Harmony, researchers can identify points of intersection and divergence in the expressions of depression and psychopathic traits, which could potentially unveil significant phenomena. Harmony is also transforming the way we approach multinational studies as it can work with questionnaire items in multiple languages. Comparisons like CES-D vs PSD become remarkably straightforward regardless of language variations. The benefits of using Harmony cannot be overstated, providing psychologists with the opportunity to explore the richness and complexity of human experiences across diverse cultures and populations. By making use of this remarkable software, researchers can deepen their understanding and enhance the quality of psychological exploration.