In the field of psychology and social science, comparative studies of surveys such as CES-D and ABQ are vital. Harmony, an advanced tool using natural language processing and generative AI models, can aid this process. Comparing every item from CES-D to ABQ is essential to understand the correlation between depression signs indicated by the Center for Epidemiological Studies-Depression (CES-D) and antisocial behaviours pointed out by the Antisocial Behaviors Questionnaire (ABQ). With CES-D vs ABQ comparison, researchers can discern patterns and overlaps that might lead to more complex interpretations of the data. The CES-D vs ABQ comparative analysis using Harmony simplifies the harmonisation process. Harmony uses large language models to match and compare instruments, providing a percentage match between each item. CES-D, widely used for depression symptoms identification, and ABQ, focusing on antisocial behaviours, might present interesting overlaps or even total mismatches. These fine details might go unnoticed during manual comparison, but Harmony, with its advanced AI, can bring these under the spotlight. We strongly recommend psychologists to adopt Harmony for CES-D vs ABQ comparative analysis. Thanks to Harmony, researchers can escape the arduous process of manually going through PDFs and transcribing them to excel. They either can select from Harmony’s database or directly upload their PDFs into Harmony’s web interface. Harmony also supports multiple languages, allowing researchers to compare study results across geographical boundaries. With the CES-D vs ABQ, global studies can be harmonised, providing a wider understanding of the relationship between depression and antisocial behaviours across different cultures and languages.