- Table of Contents
- About the Author ix
- Foreword xi
- Acknowledgments xv
- Introduction xvii
- Twin Types: More Than Just Two 1
- Living Laboratories: Double Designs and Multiple Methods 25
- Mythconceptions About Twin Conceptions—I 47
- Mythconceptions About Twin Conceptions—II 67
- Identical or Fraternal? Telling Twins Apart 91
- Biological Complexities, Myths, and Realities 115
- Mind Readers? Twin Telepathy, Intelligence, and Elite Performance 143
- Going to School and Speaking Out Loud 163
- Human Behavioral Variations: Sex and Sex Differences 183
- Good Twin–Evil Twin and Other Family Ties 209
- Twins, Clones, and Other Extraordinary Pairs 229
- Twin Spouses and Unrelated Look-Alikes: New Views 245
- Of Two Minds: Old Questions and Fresh Answers 263
- Appendix 1: What About Hellin’s Law? And Does Weinberg Rule? 285
- Appendix 2: Right-Handed or Left-Handed? 287
- Appendix 3: Polar Body Twins: A Primer 289
- Appendix 4: Nancy L. Segal’s Ten Classic Books on Twins 293
- Appendix 5: Glossary of Terms and Abbreviations 295
- Index 299