Notes on Contributors.- Acknowledgements.- Introduction; Charlotte Witt.- Part I: The Ontology of Sex and Gender.- 1. What is Gender Essentialism?; Charlotte Witt.- 2. Different Women: Gender and the Realism/Nominalism Debate; Natalie Stoljar.- 3. The Metaphysics of Sex and Gender; Ásta Kristjana Sveinsdóttir.- 4. Ontological Commitments, Sex and Gender; Mari Mikkola.- 5. The Metaphors of Being a _; Marilyn Frye.- Part II: Persons and Subjectivity.- 6. The Metaphysics of Relational Autonomy; Jules Holroyd.- 7. Beauvoir and the Allure of Self-Objectification; Nancy Bauer.- 8. A Phenomenology of Sexual Difference: Types, Styles and Persons; Sara Heinämaa.- Part III: Power, Ideology and Reality.- 9. The Politics and Metaphysics of Experience; Marianne Janack.- 10. Ideology, Generics, and Common Ground; Sally Haslanger.- 11. Experience and Knowledge: The Case of Sexual Abuse Memories; Linda Alcoff.- Index.