In the field of psychology and social sciences, the process of consolidated and refined comparisons between different studies, or within the same study over a period of time, plays a pivotal role. The comparison between the Patient Health Questionnaire (PHQ-9) and the Brief Aggression Questionnaire (BAQ) is a typical example of such an endeavor. The term ‘PHQ-9 vs BAQ’ piques the interest of many psychologists and social scientists whose research involves understanding mental disorders and aggressive tendencies or conflicts in individuals. Harmony, a software tool specifically designed for psychologists, greatly streamlines this process. Its core function lies in harmonising questionnaire items, thereby simplifying the task of comparing PHQ-9 vs BAQ. By using advanced natural language processing and AI models, Harmony allows researchers to cross-compare individual items between the PHQ-9 and BAQ in diverse languages, eliminating the painstaking task of manual cross-comparison. With Harmony’s user-friendly web interface, researchers can either select from a readily available database of instruments or upload their own instruments in PDF form. In conclusion, the PHQ-9 vs BAQ comparative analysis becomes significantly efficacious with the application of Harmony. This tool not only optimizes researchers’ time and efforts but also enhances the accuracy, thus promoting comprehensive and reliable comparative studies. So, for your next ‘PHQ-9 vs BAQ’ confrontation, let Harmony be your guide. Experience the seamless and accurate harmonisation of your psychological studies and research at your fingertips.