In cases of multi- or interdisciplinary research the definition of informed consent should be given very careful consideration, especially where the research team includes researchers from non-social science areas or non-academic research organisations. The relationship between researchers and participants may vary between fields of expertise or in projects using diverse methodologies. For some approaches, such as participatory social science research, consent to participate is seen as an ongoing and open-ended process. Highly formalised or bureaucratic ways of securing consent should be avoided in favour of fostering relationships with participants and between members of the research team where regard for the ethical needs of participants is sustained, even after the study has been completed. Review mechanisms will also need to enable this where appropriate.