This project explored how Prof. Francoise Wemselsfelder's Qualitative Behaviour Assessment was used to develop a laboratory mouse welfare tool. Wemelsfelder describes QBA as a “perspective-based” approach to animal welfare, where the animal’s subjective experience is assumed and sought, in explicit contrast to the objectivist approach to animal subjectivity typically taken by animal welfare scientists. It uses, qualitative, emotional descriptors to assess animal welfare, such as "playful" or "depressed". More information about QBA can be found in this article and on Francoise Wemelsfelder's webpage.