Participatory Quality Development follows the approach that quality in prevention and health promotion can be maximised by considering the various perspectives of major stakeholders. No partner alone can comprehensively describe the health problem and potential strategies to solve it. Only through bringing together the diverse perspectives of all partners can a feasible, sustainable solution emerge. In the international discussion on quality assurance and evaluation, this approach is couched in a variety of terms, e.g. stakeholder perspective or stakeholder orientation.
For methodological purposes this means that, for example, needs assessments or evaluations take into account and compare several differing perspectives, which may either complement or contradict each other. When a variety of information sources and/or research methods are combined to investigate a particular phenomenon, social research terms it triangulation.