The document discusses multidisciplinary and interdisciplinary research. It defines the four forms of multidisciplinary research based on interaction level: additive, non-disciplinary, integrated, and synthetic. Additive has the lowest collaboration level while researchers work independently. Interdisciplinary research requires greater interaction and a shared research goal between researchers from different fields integrating various perspectives. The main difference is that multidisciplinary questions don't require perspectives from other fields to be answered, while interdisciplinary questions do.