Foreword |
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xxix | |
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Acknowledgments |
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xxxiii | |
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3 | (2) |
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Studying Sex and Friendship in Baboons |
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5 | (6) |
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11 | (1) |
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Baboon Social Behavior: A Brief Summary |
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12 | (5) |
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Gilgil Baboons and Their Habitat |
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17 | (3) |
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The Study of Eburru Cliffs Troop |
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20 | (7) |
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Field Work And Data Analysis |
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27 | (1) |
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27 | (2) |
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29 | (4) |
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33 | (1) |
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34 | (3) |
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37 | (1) |
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Behaviors Used to Define Friendship: Proximity and Grooming |
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38 | (1) |
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38 | (7) |
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Spatial Proximity between Adult Females and Males |
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45 | (2) |
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Comparison of Grooming and Proximity |
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47 | (1) |
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48 | (4) |
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Characteristics of Friends |
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52 | (3) |
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55 | (1) |
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56 | (5) |
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What Made Friends Special |
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61 | (2) |
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Female and Male Roles in Maintaining Proximity |
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63 | (9) |
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Interactions Following a Close Approach: Friends Compared with Non-Friends |
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72 | (3) |
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75 | (1) |
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76 | (5) |
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Benefits of Friendship to The Female |
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81 | (1) |
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Male Protection of the Female and Her Offspring From Aggression by Other Baboons |
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81 | (6) |
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Friendship and Male Aggression Toward Females |
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87 | (15) |
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Aggression Toward Infants |
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102 | (5) |
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Male-Infant Relationships |
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107 | (11) |
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118 | (1) |
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119 | (4) |
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Male-Male Competition For Mates |
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123 | (1) |
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Male Consort Activity, Agonistic Rank, and Age/Residence Status |
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123 | (11) |
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Male Competitive Tactics: Different Ways of Acquiring Consort Partners |
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134 | (17) |
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Psychological Components of Male Competitive Tactics |
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151 | (4) |
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155 | (1) |
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156 | (3) |
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Benefits of Friendship to The Male |
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159 | (1) |
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Friendships and Previous Consort Activity |
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160 | (6) |
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Friendships and Subsequent Consort Activity |
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166 | (3) |
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169 | (12) |
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Adult Male-Infant Interactions: The Role of Paternity Versus Friendship with the Mother |
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181 | (3) |
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Male Contact with Infants during Interactions with Other Males |
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184 | (14) |
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198 | (2) |
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200 | (3) |
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Making, Keeping, and Losing Friends |
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203 | (1) |
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Baboon Adolescence: Making Sexual Friendships for the First Time |
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203 | (4) |
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Male Immigrants: Making Friends with Strangers |
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207 | (6) |
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The Impact of Sex: Making and Losing Friends |
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213 | (7) |
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How Long Do Friendship Last? |
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220 | (1) |
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Emotions Underlying Sex and Friendship |
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220 | (11) |
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231 | (1) |
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231 | (4) |
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235 | (1) |
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Long-Term, Male-Female Relationship in Macaques |
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235 | (13) |
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Male-Female Relationships in Other Nonhuman Primates |
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248 | (2) |
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The Evolution of Human Male-Female Relationships |
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250 | (13) |
APPENDIXES I-XIV |
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I. Method of Estimating Female Ages |
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263 | (1) |
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II. Adult Female Dominance Hierarchy from September 1977 through December 1978 |
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264 | (1) |
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III. Behaviors Recorded Continuously during Focal Samples of Adult Females |
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265 | (4) |
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IV. Number of Focal Samples (FS) and Amount of Focal Sampling Time in Minutes (M) on Females at Different Reproductive Stages |
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269 | (1) |
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V. Activity Categories Used in Female Focal Samples |
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270 | (1) |
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VI. Determination of Proximity Score Weighting Factors |
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270 | (1) |
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VII. Method of Calculating Composite Proximity Scores (C Score) |
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271 | (1) |
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VIII. Identification of Putative Juvenile Offspring |
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271 | (1) |
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IX. Characteristics of Friends of Males of Different Age/Residence Categories |
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272 | (2) |
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X. Restrictions Applied to Scoring of Approaches and Leaves |
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274 | (1) |
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XI. Percentage of Time Anestrous Females Spent in Close Proximity (within 1 m) to Friends and Non-Friends |
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275 | (1) |
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XII. Frequency with Which a Close Approach by the Male was Followed within 5 Seconds by a Leave by the Male (``Immediate Leave'') for Friends and Non-Friends |
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276 | (1) |
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XIII. Frequency with Which a Close Approach by the Female was Followed within 5 Seconds by a Leave by the Female (``Immediate Leave'') for Friends and Non-Friends |
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276 | (1) |
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XIV. Males Frequently Observed Near Infants (within 5 m) |
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277 | (2) |
Bibliography |
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279 | (16) |
Subject Index |
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295 | |