Contents -- List of Figures -- Acknowledgments -- 1 The Male and Female Brain -- 2 Boy Meets Girl -- 3 What is Empathizing? -- 4 The Female Brain as Empathizer: The Evidence -- 5 What Is Systemizing? -- 6 The Male Brain Systemizer: The Evidence -- 7 Culture -- 8 Biology -- 9 Evolution of the Male and Female Brain -- 10 Autism: The Extreme Male Brain -- 11 A Professor of Mathematics -- 12 The Extreme Female Brain: Back to the Future -- Appendix 1: The "Reading the Mind in the Eyes" Test -- Appendix 2 The Empathy Quotient (EQ) -- Appendix 3: The Systemizing Quotient (SQ) -- Appendix 4: The Autism Spectrum Quotient (AQ) -- References -- Bibliography -- Index.