Dr Gardiner researches meta-philosophy and epistemology (the branch of philosophy dealing with the theory of knowledge). She is interested in epistemic questions about society, race, gender and law. She also researches the nature of knowledge, understanding, and the ethics of knowledge and belief.
- Epistemology (theory of knowledge)
- Epistemology of law and crime
- Epistemic virtue (ethics of knowledge and belief)
- Social statistics
- Philosophy of sexuality
- Philosophy of sex work