Software When comparing and contrasting psychology research tools, researchers often face the challenging task of harmonisation - the alignment of items or questions between various questionnaires or instruments. Two such prominent measures are the General Health Questionnaire 12 (GHQ-12) and the Perceived Stress Scale (PSS). GHQ 12 vs PSS - what are the similarities, differences, and how can they be effectively compared? This is where Harmony, a specialised software developed for psychologists, comes into play. Harmony leverages the power of natural language processing and generative AI models, to enable researchers to harmonise questionnaire items from multiple studies and in different languages. In the case of GHQ 12 vs PSS, Harmony can provide a percentage match between each item in these two popular measures of psychological distress. This is a significant aid in demystifying the comparisons and facilitating effective research synthesis. Harmony allows researchers to select instruments from its database, or to upload their own in PDF form, providing a user-friendly interface for comprehensive analysis. Using Harmony for GHQ 12 vs PSS can streamline the process, fostering efficiency and accuracy in research. For optimal use and efficacy, Harmony continues to add to its database and adapt its algorithms, making it an invaluable tool for psychologists globally, driving the comparison of GHQ 12 vs PSS into a precise science.