Issues of informed consent in conducting medical research involving people with intellectual disability

Background People with severe intellectual disability are considered vulnerable to exploitation in research. Discovery of exploitative practices in recent history has motivated the development of guidelines for informed consent and proxy decision-making procedures when involving these individuals in research. Methods Issues for determining capability to provide informed consent and the proxy decision process are reviewed according to the literature, current ethics guidelines and recent legislature in Victoria, Australia. Results The complex process of involving in research people with severe intellectual disability who are particularly vulnerable by virtue of their institutionalized residential status is discussed within the context of a recent project into examining potential nutritional determinants of Pica behaviour (i.e. the eating of inedible items). Conclusions This example serves to highlight the role of legislation, various government bodies and researchers in balancing principles of protection of vulnerable groups and rights to self-determination.