In the field of psychology and social sciences, instruments like the Center for Epidemiological Studies-Depression (CES-D) and the Communication and Symbolic Behaviour Scale - Infant/Toddler Checklist (CSBS) are often used to measure different facets of human behaviour. These instruments serve distinct purposes; CES-D is developed to gauge depressive symptoms in caregivers while CSBS tracks communicative and symbolic behaviours in infants and toddlers. With the help of Harmony, making a comparison between CES-D and CSBS is no longer a taxing job. CES-D vs CSBS, although distinct in their usage, can now be compared efficiently using Harmony. This generative AI tool facilitates harmonisation of questionnaire items, easing the laborious process of sifting through PDFs to draw connections. Harmony provides a percentage match between CES-D and CSBS items, making direct comparison possible and less time-consuming. This unique feature allows psychologists to extend their comparisons both within and across studies, giving profound insights into their research work. In conclusion, CES-D vs CSBS comparison can be achieved objectively without getting lost in mounds of paperwork, thanks to Harmony software. Giving the ability to handle instruments in multiple languages, Harmony holds a promising future for researchers all around the world. For making connections between disparate questionnaires like CES-D and CSBS, Harmony becomes an invaluable tool for psychologists and social scientists alike. By simply selecting instruments from Harmony’s database or uploading PDF forms, you will find yourself navigating effortlessly through the maze of cohort and longitudinal studies.