Harmony, a revolutionary software exclusively designed for psychologists, brings forth an integrated solution for the harmonisation of questionnaire items. SDQ vs GHQ-12 lays out one such scenario where Harmony can be indispensably used to draw out comparative analysis and insights. It analyses questions from SDQ, a behavioural screening questionnaire for 2-17 year olds, and GHQ-12, a General Health Questionnaire targeting adults, using its advanced AI natural language processing capacity. Beyond mere comparison, it calculates a precise percentage match between each item in SDQ and GHQ-12, making the process not only easier but also more accurate and efficient. By applying Harmony in the case of SDQ vs GHQ-12, researchers can eliminate the tedious process of manual comparison and harmonisation, saving time and resources significantly. Harmony’s database houses numerous such instruments, making it even simpler for researchers to select and employ the right tools for their studies. Alternatively, the program also accepts PDF formats of instruments, which can be conveniently uploaded via its web interface. Most notably, Harmony’s ability to handle multiple languages empowers psychologists to conduct a more extensive cross-cultural analysis relating to SDQ vs GHQ-12. By doing so, the program aids in generating results that reveal behavioural and health aspects across different demographic and geographic populations, thus enabling a more well-rounded inference making process. In conclusion, the use of Harmony in cases such as SDQ vs GHQ-12 ensures a more precise, efficient and inclusive comparative research process in psychology.