Contents 5.The Evolution ofCooperation in Biological Systems (with William D.Hamilton) 88 PART IV Advice for Participants and Reformers 6.How to Choose Effectively 109 7.How to Promote Cooperation 124 PART V Conclusions 8.The Social Structure ofCooperation 145 9. The Robustness ofReciprocity 169 APPENDIX A TOURNAMENT RESULTS 192 APPENDIX B PROOFS OF THE THEORETICAL PROPOSITIONS 206 NOTES 216 BIBLIOGRAPHY 223 INDEX 231Contents 5. The Evolution of Cooperation in Biological Systems (with William D. Hamilton) 88 PART IV Advice for Participants and Reformers 6. How to Choose Effectively 109 7. How to Promote Cooperation 124 PART V Conclusions 8. The Social Structure of Cooperation 145 9. The Robustness of Reciprocity 169 APPENDIX A TOURNAMENT RESULTS 192 APPENDIX B PROOFS OF THE THEORETICAL PROPOSITIONS 206 NOTES 216 BIBLIOGRAPHY 223 INDEX 231