Sex at Dawn

infanticide, 64, 77, 111, 187, 203-4

infant mortality, 174, 201-4, 322n

infants, 284, 293

infertility, 100, 238, 240

infidelity, emotional, 144-45

male, 55-56, 142, 144

infidelity, sexual, 7, 144-45, 303, 325n

female, 8, 55, 56, 141, 142, 228, 229

Inquisition, 3, 254

insects, 21, 22, 209

Insel, Thomas, 136, 324n intelligence, 68, 84, 179 In the Next Room (Ruhl), 340n intimacy:

emotional, 2, 55-56, 142, 278, 289, 304 sexual, 7, 23, 289, 304 Inuit, 121

Invisible Sex, The, 201 Iphicles, 228 Iran, adultery in, 97 Ireland, 169-70 Iroquois, 42-43 Islam, 97, 119-20, 344n Ismail the Bloodthirsty, 218 Italian immigrants, 162 Ivory Coast, 67, 70 Jacob, 233

Jamaica, 289, 345n

Japan, 210, 241, 289, 338n, 346n

Jaynes, Julian, 303

jazz, jism, 86, 320n

jealousy, 10, 23, 64, 129, 138-47

Buss’s study of, 55, 141-45

fear and, 147-48

female, 55-56, 142

lack of, 92, 93

male, 35, 55, 56, 57, 92, 93, 141, 142

Jefferson Airplane, 307

Jetha, Cacilda, 120, 202

jewelry, 57, 262, 321n

Jivaro, 184-85, 184, 331n

Johanowicz, Denise, 178

John Paul II, Pope, 3

Johnson, Eric Michael, 72, 97-98

Johnson, Virginia, 294

John XXI, Pope (Peter of Spain), 40

Jones, Ernest, 288

Judaism, 97

Jung, Carl, 293

Kalahari Desert, 175, 176

Kama Sutra, 253, 256, 268

Kanazawa, Satoshi, 217, 344n

Kano, Takayoshi, 71

Kant, Immanuel, 158

Keeley, Lawrence, 184, 330n-31n

Kellogg, John Harvey, 285-88

Kendrick, Keith, 272

Kennedy, Robert, 194

Kenya, baboons in, 178-79

Khan, Ghengis, 218

Kibale Forest, 189

Kiefer, Otto, 124-25 Ki-Kongo, 86

“killer ape” theory of human origins, 64-65, 76

King, Martin Luther, Jr., 194

Kinsey, Alfred, 98, 231, 263, 294

kinship, 107, 108

Kipnis, Laura, 41

kissing, 77, 278

Kissinger effect, 55

klismaphilia, 286

Knauft, Bruce, 185

Knight, Chris, 101

Korotayev, Andrey, 191

Krafft-Ebing, Richard von, 250

Kraus, Karl, 287

Kremen, Gary, 161

Krippner, Stanley, 32

K-selected species, 326n Kulina, 89, 94n, 105, 125-26 Kundera, Milan, 296 !Kung San, 11, 119, 175, 176 life expectancy of, 205-6 Kwakiutl, 190, 192-93 Laertes, 305

land, 13, 14, 163, 190, 192 population growth and, 203-4 tragedy of the commons and, 169-70 language, 84-85, 94, 188 Mosuo, 127, 128 Larrick, James, 206 Lea, Vanessa, 108

Lectures on Jurisprudence (Smith), 176-77 Lee, Richard, 176, 206 Lehrman, Sally, 320n

Leipzig, Adam, 135

Le Jeune, Paul, 107, 174

Leonardo da Vinci, 271

lesbians, 273, 276-77, 302, 309

Letters from the Earth (Twain), 81, 244, 290

leucocytes, 228, 264, 265

Leviathan (Hobbes), 157

libido, 2, 86, 243, 304, 327n

female, 38-39, 47-48, 51-52, 248, 254, 275

male, 40, 47, 52, 221, 276-77, 281-82, 293-96, 299

life expectancy, 201-2, 205-6, 207

Lifestyle, The (Gould), 308

Limited Wants, Unlimited Means (Gowdy), 180

Linnaeus, Carl, 63

Lippa, Richard, 276

Lipton, Judith, 225

Lishner, David A., 145

Liszt, Catherine, 310 Little, Tony, 275 Lloyd, Elisabeth, 263-64, 342n London, 29, 31, 110-11, 156 longevity, 200-212 infant mortality and, 201-4 stress and, 208-10 Lotz, Jeff, 201

love, 29, 72, 121-22, 137, 213, 295, 297

free, 307, 317n

lust vs., 113-14

monogamy vs., 303, 304, 309

mother’s, 106

music and, 146-47

parental, 38, 107, 148

paternal, 53

romantic, 6, 38, 41, 128, 145 sex vs., 6, 26, 29, 56, 298

Lovejoy, Owen, 10n, 34, 216-17

Loves of the Plants (E. Darwin), 316n-17n

Lowry, Rich, 134-35

Lugu Lake, 126-31

Lusi, 89

lust, 113-14

Lust in Translation (Druckerman), 303 lying, 270, 277, 298-99, 310 macaques, 62, 63, 178, 265 copulation calls of, 257 orgasm in, 263, 342n MacArthur, R. H., 326n McDonald, Roger, 26 McElvaine, Robert S., 111, 307 Madame Bovary (Flaubert), 252-53 Madsen, David, 174-75

Mae Enga, 184-85, 184, 331n Magesa, Laurenti, 153 Magna Carta, 14 Maher, Bill, 41, 317n Maines, Rachel, 247-48, 340n

major histocompatibility complex (MHC), 275, 343n, 344n Malaysia, monkeys in, xi-xiii

male parental investment (MPI), 7, 13, 26, 35, 48, 49, 51-55, 57, 60, 322n