CES-D vs BPFSC As psychologists, we often encounter the task of comparing and contrasting different psychological instruments. One common comparison might be between the Center for Epidemiological Studies-Depression (CES-D) and the Borderline Personality Disorder Features Scale (24-item) (BPFSC), two extensively used questionnaires assessing disparate facets of psychological wellbeing. The process of comparing these psychometric tools can be qualitatively demanding and laborious, often requiring a manual comparison of individual items. Thankfully, Harmony, a tool developed explicitly for such tasks, can simplify this process, saving both time and effort. Harmony’s prime serviceability lies in its ability to use natural language processing and generative AI models, assisting researchers in harmonising questionnaire items, including those from CES-D and BPFSC. Harmony’s technology utilises large language models to compare instruments and provides a percentage match between each item in CES-D and BPFSC. This feature can help us determine how these tools overlap and diverge, aiding in more robust data analysis and interpretation. Furthermore, Harmony is not restricted to English questionnaires; it can also effectively compare items in multiple languages. To use Harmony for a CES-D vs BPFSC comparison, simply select the CES-D and BPFSC from Harmony’s extensive database, or upload your own PDF versions of these instruments. Harmony’s user-friendly web interface at https://harmonydata.ac.uk/app allows for an easy drag and drop feature for your convenience. Start using Harmony today to leverage the CES-D vs BPFSC comparison and unlock new frontiers in your research efficiency and efficacy.