A cooperative project is characterised by the equal investment of means towards a conjoint solution for a question or problem by the university and a cooperating partner. Both parties may use and market the results of the cooperative work independently. Cooperating like this is a possibility, when, for example, a new instrument or method is to be developed. This way, both parties are able to put forth their expertise, and a questionnaire or test, that has been developed together, can be used and refined independently by both parties. Cooperative projects are not conducted with practice partners exclusively, but also often take place with research institutes and partners.