The extended essay takes the form of a substantial literature review that demonstrates your ability to work independently and to produce a piece of work that shows you have the skills of knowledge retrieval, analysis, synthesis and critique. It provides you with an opportunity to investigate, in-depth, a topic of professional interest.
Overall, it should demonstrate that you have benefited from taking the programme e.g. by showing an awareness of what research can offer to understand a particular clinical, organisational or policy problem.
Undertaking and writing up a literature review involves some distinct stages that you will need to go through.