Related by context. All words. (Click for frequent words.) 51 evolutionary psychologists 51 By Eva Norlyk 50 Tor Bjerkedal report 50 BY EDWARD ZERIN 50 Harold D. Stolovitch 49 asexual organisms 48 Workaholism 48 Matthew Carrano curator 48 George Preti 48 Evolutionary psychology 47 masculine traits 47 mathematic equations 47 Disordered eating 47 Bleske Rechek 47 assortative mating 47 Emma Hitt 46 feminist theorists 46 Secular therapists 46 evolutionary psychology 46 asexuality 46 Bobbitt Zeher 46 societal pressures 46 By Zachary Pincus 46 unmarried cohabitators 46 drank colas 45 extrinsically motivated 45 Cloned embryos 45 DBCP pesticide scientists 45 By Debra Cassens 45 Neoclassical economics 45 Grandma Octuplets mom 45 sociological theories 45 Evolutionary biology 45 homophily 45 Evolutionary psychologists 45 anatomical physiological 45 medullary bones 44 umami savory 44 Marital satisfaction 44 nourish starved bodies 44 Laura Carstensen 44 Alvergne 44 Chronic Lyme disease 44 evolutionary adaptations 44 impostor syndrome 44 biologically programmed 44 warehoused Morganelli 44 Easterlin paradox 44 journal Hormones 44 Sexual Paradox 44 internalized homophobia 44 Documents Sect 44 PINR #/#/# 44 Personality traits 44 TOKYO Sumo wrestlers 44 Methane hydrates 44 fattier diet 44 Country singer Tompall 44 platonic friendships 44 Unwed mothers 43 autism researcher Irva 43 By DawnDee Bostwick 43 Defending champion Na Yeon 43 Herbenick 43 penile vaginal penetration 43 bdelloid rotifer 43 asexuals 43 Soxman Funeral Home 43 Sharon Schmickle writes 43 serial monogamists 43 Relievers Fernando Abad 43 heterosexuality homosexuality 43 genetically wired 43 Schoppe Sullivan 43 pareidolia 43 evolvability 43 THE METROPOLITAN MUSEUM 43 Daily Princetonian Princeton 43 Jonathan Schooler 43 pexelizumab trials 43 Bob Grossweiner & 43 tubby husbands 43 cognitively stimulating 43 Louise Hawkley 43 HENDERSON NEV 43 John Meynard Keynes 43 nanoscale phenomena 43 Ulrike Malmendier 43 Edgar Engleman 43 genetic determinism 43 Glue traps 43 cognitive biases 42 Catalina bison 42 By ROBERT MATAS 42 Fruit flies 42 heritable trait 42 imposter syndrome 42 Enlightenment rationalism 42 Narcissists 42 intrinsic aptitude 42 nongenetic 42 Male chimpanzees 42 Male infertility 42 chemosignals 42 cosmological theories 42 Tavris 42 phrenologists 42 Domesticated dogs 42 genital abnormalities 42 feminine traits 42 surveys Herbenick 42 pepper spray Roskowski 42 Mike Taugher covers 42 By Diane Hirth 42 spontaneously abort 42 Human beings 42 Wisdom Mont 42 Fausto Sterling 42 subfertile 42 XY chromosomes 42 Boyd Hopalong Cassidy 42 Dr. Leondires 42 nonhuman animals 42 Dr. Bonnie Eaker 42 Gabriel Hortobagyi MD 42 Learned helplessness 42 Erich Fromm 42 Gliese #G 42 Ramachandran Vasan 42 maximizers 41 methodological differences 41 Heather Turgeon 41 QMy husband 41 bdelloids 41 uncircumcised males 41 Premature menopause 41 Find Xp Sales 41 occupational segregation 41 Vaginal dryness 41 cohabitors 41 Eukaryotes 41 Amid sensationalist headlines 41 male prairie voles 41 By Keti Sikharulidze 41 Tina Griego writes 41 sex hormones androgens 41 Prairie voles 41 younger #-# gramonline.org 41 insects crustaceans 41 By Wai Lang 41 BY MATT BUCHANAN 41 Lela McKnight Eily 41 DEC2 41 extrinsically 41 Evidence Therapeutic 41 genetically predetermined 41 applied econometrics 41 super recognizers 41 Actress Staci Keanan 41 DMSc 41 irregular menstrual periods 41 sociologist Pepper 41 MacroChem actual 41 hermaphrodites 41 autistic traits 41 HNRCA 41 accomplice Hudgens 41 Moderate drinkers 41 contacting Everlast Worldwide 41 Richard Wrangham 41 Kleinplatz 41 biphobia 41 speciesism 41 Hester Rosebud Pristine 41 Hugh Jackman Seth Rogen 41 De Vogli 41 Emile Durkheim 41 calculated seductress 41 methodological weaknesses 41 hedonic treadmill 41 Vince Vaughn Paul Sculfor 41 phenotypic differences 40 CN cautions 40 adolescent females 40 Binge eaters 40 flashbulb memories 40 Traditional alkaline batteries 40 humans 40 inconsistencies Perino 40 hermaphroditism 40 Haglund cheery classic 40 scientism 40 Funeral Home Squirrel Hill 40 DEAR ABBY I'ma 40 neo Darwinian 40 autistic savants 40 cohabiting relationships 40 prairie vole 40 lawyer Leo Panzirer 40 I'ma hoarder 40 Actress Amanda Bearse 40 quantum weirdness 40 By MICHELLE STARR 40 SOLARTOPIA 40 Serial killers 40 Actress Lela Rochon 40 eHarmony Labs 40 DECEIT AND EXCESS 40 genetically identical twins 40 perinatally infected 40 genetically programmed 40 prosocial behavior 40 earth creationists 40 Chiara Cavaglieri 40 antisocial traits 40 vilified romanticized 40 Carnivorous plants 40 Lucid dreaming 40 unmeasured factors 40 Goldbeck Wood 40 Dental caries 40 blobfish 40 socially monogamous 40 single celled creatures 40 IN BRIEF Page 40 Wabi sabi 40 Edward Ehrlick 40 constitutionalists Theriault 40 Gadaon 40 Genetic predisposition 40 Rom coms 40 neural underpinnings 40 Insect repellants 40 By Susan Parkou 40 ectothermic 40 non pledgers 40 overgeneralizations 40 polygyny 40 Contributing Editor JAMA 40 sensual beings 40 physiological adaptations 40 Sexual promiscuity 40 Copper equivalent CuEq 40 precaution Wiehle 40 philosophical quandaries 40 Georg Cantor 40 Societal norms 40 malignant mesothelioma Alfacell 40 prenatal androgens 40 journal Evolutionary Psychology 40 impertinent flamboyant endearingly 40 naturalistic worldview 40 Tabu Butagira email 40 Terry Kosdrosky Of 40 EuroCollege 39 outercourse 39 Kasasira email 39 incommensurability 39 Quicksilver Resources filings 39 Egg laying hens 39 multi celled organisms 39 ethnicity socioeconomic status 39 Edward O. Laumann 39 habilis 39 alexithymia 39 Malthusians 39 unisexual 39 Taxonomists 39 George Takei marries 39 Siebel Validation Program 39 Garter snakes 39 Self centeredness 39 Canadian rocker Deryck 39 sexually dimorphic 39 premenstrual syndrome PMS 39 Gastineau gyms open 39 String theorists 39 habitual liars 39 Pygmy hippos 39 epistemic 39 ectotherms 39 muscle dysmorphia 39 spiritualize 39 Slime molds 39 Gender stereotypes 39 premature baldness 39 manages NASA Jet 39 Muscular colt 39 Rosovsky 39 Parvus tactical mission 39 paternal discrepancy 39 naturalistic explanations 39 postindustrial society 39 Glassman Archive 39 varicoceles 39 Schiebinger 39 skateboarding BMX Motocross 39 Flowering plants 39 biological predisposition 39 maleness 39 Cohabitating 39 doi #.#/gr.#.# 39 Associate Professor LaMontagne 39 nonhuman species 39 fraternal twin pairs 39 polycystic ovarian syndrome PCOS 39 crewmates Grover Skeens 39 Pascal Dupuis Alex Goligoski 39 Evolutionary biologists 39 Iva Skoch 39 Routine Paps should 39 CANNON FODDER 39 Unconditional love 39 traumatic childhoods 39 flightless females 39 fruitflies 39 Delayed gratification 39 unexamined assumptions 39 internalizing disorders 39 unexplained infertility 39 Relieves Administrative Burden 39 PLUS LIFELONG FITNESS 39 faking orgasms 39 impaired insulin secretion 39 Marani Brands filings 39 delaying childbirth 39 developmental dyscalculia 39 genetically hardwired 39 sexual permissiveness 39 Thyroid nodules 39 profounder 39 gender benders 39 Unborn babies 39 recency bias 39 FREE HEARING SCREENING 39 dimorphism 39 intersexuality 39 celibate priests 39 Ruth Ludwin 39 acedia 39 Cornea transplants 39 nanoelectronics photonics 39 intersexual 39 CFRA forensic accounting 39 intelligence quotients 39 Interracial couples 38 assortative 38 Soraya Sepahpour Ulrich 38 Cushioning underfoot 38 masculinization 38 Still rascals rogues 38 Biodynamic farmers 38 Matt Lattanzi 38 subfertility 38 stereotypically masculine 38 Maureen Kilian 38 Jen Record Searchlight 38 microbial ecosystems 38 Hugo Canales 38 permissiveness Waxman 38 transhumanist 38 capitalist societies 38 writer Kwang Tae 38 stereotypically feminine 38 Cloned animals 38 Victorian bushfires destroy 38 Promiscuity 38 extraverts 38 French financier Arpad 38 Molnar Szakacs 38 Godly wisdom 38 metacognition 38 gelotophobia 38 Dietary intakes 38 Lunar Reconnaissance 38 polygynous 38 fission fusion 38 mythological beings 38 Behavior modification 38 subconscious biases 38 Barbara Thiede 38 Bacterial vaginosis 38 Irva Hertz Picciotto 38 Rugged individualism 38 decomposers 38 Kira Birditt 38 unicellular organisms 38 Mien Chie Hung 38 reciprocal altruism 38 Biologically speaking 38 ticker symbol HCR 38 observable phenomena 38 inherit predisposition 38 evolutionarily speaking 38 eating disordered 38 hormonal surges 38 psychoanalytic theory 38 Popping pills 38 photographers Francesco Scavullo 38 compulsive masturbation 38 genetically dissimilar 38 nonrational 38 Romy Ribitzky 38 longtime mistress Monckton 38 Anal cancer 38 effeminacy 38 AMT Labant 38 Highstar Capital LP 38 menopause andropause 38 bacterial flagellum 38 monozygotic 38 biophilia 38 journal Psychological Bulletin 38 APOE ε4 38 chimplike 38 cerebrovascular diseases 38 plusers 38 orthorexics 38 serosorting 38 neo Darwinists 38 Urinary incontinence affects 38 side blotched lizards 38 Scientism 38 proto Canaanite precursor 38 Female Brain 38 divorced Charisse 38 mathematical proofs 38 Youfa Wang 38 altruists 38 Leishmania parasites 38 Whitebark pines 38 TITLE Auctions 38 erotic arousal 38 Parasitic worms 38 inborn traits 38 sexual dysfunctions 38 Dust bunnies 38 Kiang Liu 38 Psychopaths 38 JHUSON 38 Penile cancer 38 Computationally 38 Zalicus periodically files 38 inborn 38 Sherry Marts 38 Stella Adler Lee Strasberg 38 Romul 38 negative affectivity 38 By Malcolm Maclachlan 38 John T. Cacioppo 38 Cyrus Langhorne 38 Brain plasticity 38 brotherly sisterly 38 raunch culture 38 arterial thickening 38 #q#.# deletion syndrome 38 microcephalic 38 Oversulfated chondroitin sulfate 38 Aryn Karpinski 38 innately inferior 38 chest thumping standup 37 severely cognitively impaired 37 Perfectionists 37 McGrath RentCorp Sets 37 dizygotic 37 Madoff niece Shana 37 IVF pregnancies 37 psycholinguistics 37 Stable isotopes 37 INSKEEP Okay 37 innate tendency 37 Lamarckian 37 monogamous marriages 37 sociolinguistics 37 overtly feminine 37 actress Audra Lindley 37 Compulsive hoarders 37 rankism 37 hegemonic masculinity 37 penile spines 37 Horseshoe crabs 37 Multivariate analyzes 37 prosocial behaviors 37 Wide chasms exist 37 thicker carotid arteries 37 stereotypically male 37 sociality 37 Spouses Gail Liberman 37 God dess 37 By JENNIFER FEEHAN 37 Chastity Bono announces 37 Biologically 37 Interracial marriages 37 purely naturalistic 37 ovulatory cycles 37 Svetlana Medvedeva meanwhile 37 neo cortex 37 anthropocentrism 37 Ethical vegans 37 Michael Whooley Columnist 37 Subsistence farming 37 Marla Caplon worried 37 intraspecific 37 Evolutionists 37 cold blooded creatures 37 physicist mathematician 37 Homo economicus 37 Anorexia nervosa 37 Verena filings 37 bdelloid rotifers 37 Kaminak disclosure 37 MedPAC Hackbarth declined 37 philosophical naturalism 37 Sale Prostitution Pornography 37 Luo Odinga 37 ephebophilia 37 lignan intake 37 saber tooth cats 37 sexlessness 37 Androgenetic alopecia 37 Neutered dogs 37 overly sexualized 37 nonrunners 37 HPV prevalence 37 #.# df = 37 Bearded dragons 37 collaborator Roslyn 37 vaginal lubrication 37 Laurie Barclay 37 filipino values 37 heritable variation 37 Gini coefficients 37 Extroverts 37 transitivity 37 Suicidal tendencies 37 Hibernating bears 37 Female GIs 37 monogamously 37 impregnate females 37 Marta Topran 37 mice chipmunks 37 universals 37 local radicalization incubators 37 Interspecies 37 agelessness 37 hormone androgen 37 Stressful situations 37 nonidentical twins 37 Telomere length 37 intellectually stunted 37 neets 37 Holmesburg Prison experimental 37 Ariela Keysar 37 Private eyeA detective 37 russet colored rings 37 Platypuses 37 Jill VandenBerg whom 37 Christo Fascist 37 implicit biases 37 babymaking 37 nonmarried 37 By MICHAEL RODDEN 37 evolutionarily advantageous 37 Multiple logistic regression 37 culturally conditioned 37 hetrosexual 37 Limperopoulos 37 meta cognition 37 Childlessness 37 Lavigne cited irreconcilable 37 downscale whites 37 technological singularity 37 dizygotic twins 37 aide Callista Bisek 37 Menopausal women 37 Hydrogen atoms 37 gender stereotypes 37 interspecies 37 zoophilia 37 Veranes researcher 37 evolutionarily novel 37 Filial piety 37 David Arminas 37 Endel Tulving 37 Chethik 37 Francis Galton 37 M. smithii 37 & Analgesia retracted 37 Evolutionarily speaking 37 sea scorpions 37 callous unemotional traits 37 AGW proponents 37 formerly churched 37 Networking Infrastructure DCNI 37 empirical evidences 37 Prion proteins 37 NABE Outlook 36 books Sinisterism Secular 36 psychosomatic illnesses 36 Anchin ascribes 36 companionate 36 ovarian hormones 36 counterterrorist defenses 36 Habituation 36 tomboys 36 Polycystic Ovary Syndrome PCOS 36 underarm sweat 36 aquatic vertebrates 36 Short telomeres 36 professing Christians 36 phenotypic variation 36 unsocialized 36 constructivists 36 Maria Tussi 36 @ jtoeman Wow 36 XX chromosomes 36 DEAR ELLIE I'ma 36 biblical literalists 36 intersectionality 36 Hollonds 36 By Peter Garnham 36 ignorances 36 Goertzel 36 humans interbred 36 sexist stereotypes 36 perceiver 36 exhale carbon dioxide 36 statistically significant correlations 36 John O. Holloszy 36 Holt Lunstad 36 attacks Akawu 36 consumeristic 36 hurry Siddiqa 36 subclinical hyperthyroidism 36 By RANDY GALLOWAY 36 pre pubertal 36 Dear Anon 36 socioeconomic status SES 36 pure bunkum 36 By EURSOC Two 36 Premarital sex 36 epistemologically 36 philosophical dilemmas 36 Lascivious diva sues 36 platonic relationships 36 AspenTech periodic reports 36 Huntsburg visibly moved 36 SRY gene 36 normativity 36 By Georgina Enzer 36 unprotected receptive anal 36 outgroups 36 retrosexual 36 egalitarians 36 journalist Peggy Orenstein 36 familial aggregation 36 NaturalNano filings 36 co habitating couples 36 Bodily functions 36 Domesticated animals 36 smaller freshwater crocodiles 36 companionate love 36 Anaxagoras 36 unfalsifiable 36 Success Technological Innovation 36 anthropocentric 36 Snow buntings 36 human beings 36 Forced marriages 36 Rose Caiola 36 Warm blooded 36 Doron Silverman 36 wolves cougars 36 Loyola Stritch 36 sexually permissive 36 = -#.# df 36 polymorphous perversity 36 magnetic monopoles 36 rote memorisation 36 Net SBM MOCA 36 Banana peels 36 Gender inequalities 36 By Tony Alabastro 36 Cognitive impairment 36 Platonic solids 36 varicocele 36 externalizing behaviors 36 SmartHeat filings 36 Celine Vachon 36 Froguel 36 Randomised controlled trials 36 Metrosexuals 36 imperfect beings 36 implicit egotism 36 Sexual arousal 36 Darryl Grigg 36 multi celled 36 McCardell cites 36 Neumark Sztainer 36 Post partum depression 36 females 36 hedonistic lifestyles 36 Opposites attract 36 hormones progesterone 36 masculinity 36 By Elias Hazou 36 determinists 36 Lou Sessinger column 36 Ignorance breeds 36 gender biases 36 celled organisms 36 By Sonia Kolesnikov 36 Hadza 36 Wahhabi strain 36 Dung beetles 36 postcolonial literature 36 psychologies 36 Daoism 36 pride exaltation 36 anthropomorphise 36 materialistic worldview 36 Dust mites 36 Skechers cartoon 36 nonpregnant women 36 Scientifically speaking 36 Agnes Poirier 36 rat pups 36 rational beings 36 Circadian clocks 36 Zinc deficiency 36 producer Roger Dobkowitz 36 misandry 36 hormone estradiol 36 Lactose intolerance 36 Species extinction 36 visually stimulated 36 penile vaginal intercourse 36 buildings Makigami 36 Anorexics 36 erotics 35 By Ahto Lobjakas 35 hetero couples 35 False prophets 35 resentfulness 35 ticker symbol ACOM 35 fascinated mathematicians 35 Compulsive gamblers 35 transhuman 35 Brent Cleaveland 35 birds amphibians reptiles 35 Rote memorization 35 Interracial dating 35 postpone childbearing 35 gorillas orangutans 35 Polyamory 35 Luci Baines born 35 Tapeworms 35 mechanical ware 35 immunodeficiencies 35 glucose abnormalities 35 Dotted lines 35 overprotect 35 Hermit crabs 35 hunter gatherer ancestors 35 CFA Exams provides 35 By ARMANDO SALGUERO 35 Mayo Clinic oncologist 35 electrons behave 35 androgen hormone 35 publicist Jillian Fowkes 35 tiny single celled 35 Bioenvision filings 35 butches 35 phenotypic variability 35 Woe woe woe 35 cohabiters 35 considerably shorter unhealthier 35 perfectness 35 Generation Yers 35 nostalgic yearnings 35 benevolent sexism 35 Dr Victoria Lukats 35 Inuit Eskimos 35 reductionists 35 pro opiomelanocortin 35 underarm odors 35 PCOD 35 chronic prostatitis 35 Barbara Y. Thomae 35 Alina Treiger 35 socioeconomic statuses 35 cohabitations 35 Julianne Moore schmoozed 35 Brine shrimp 35 Fear begets 35 Kenneth Kies Washington 35 BRCA gene mutations 35 behave selfishly 35 perceptual biases 35 Donna Haraway 35 inheritability 35 screenplay lampooned 35 Cry Baby raunchy 35 sexes 35 Historical analogies 35 Larry Cornman physicist 35 Kaye Wellings professor 35 emotional neediness 35 eros 35 oceanic ecosystems 35 By RON MORRIS 35 Deborah Tannen 35 hyper masculine 35 stepmothers 35 nonlinear dynamics 35 discordant couples 35 MHC genes 35 sexual dimorphism 35 Hyper texters 35 Chest x rays 35 Premature ejaculation 35 Moore Theatre tickets.com 35 theological virtues 35 Aortic aneurysms 35 procreate 35 monogamists 35 repressed desires 35 those whys whys 35 epiphenomena 35 abstract notions 35 evolutionary divergence 35 Transhumanists 35 Unplanned pregnancy 35 Brandenn 35 Enchanted Alan Menken 35 serial daters 35 homosexually 35 body fatness 35 Global warming alarmists 35 releasers 35 tiniest fragments 35 loveless marriages 35 hormonal abnormalities 35 Nutritional deficiencies 35 menstrual irregularities 35 hyper sexualization 35 Yehudit Shendar 35 interracial friendships 35 mammalian brains 35 heterosexual monogamous 35 Hiroshi Yoshida currency 35 invasive secretory carcinoma 35 Alison Berns 35 unevolved 35 microevolution 35 Masculinity 35 captive gorillas 35 By SHEERA FRENKEL 35 adolescent sexuality 35 frightful bigotry 35 revolutionary praxis 35 idealizations 35 Keith Ablow blurring 35 Phillip Goad toxicologist 35 reductionistic 35 vitalism 35 heterosexual 35 solving crosswords 35 hairy palms 35 crocodiles snakes 35 Postelnik 35 BY BOB CURTRIGHT 35 overdeveloped breasts 35 agreeableness 35 heteronormativity 35 differing sexual orientations 35 neophobic 35 OCD sufferers 35 Erectile function 35 stereotypic behaviors 35 genital HPV infections 35 By STEVE ROSEN 35 Sheri Klouda 35 By DREW DAVISON 35 PCA3 scores 35 heterosexually 35 polycystic ovary syndrome PCOS 35 binary opposites 35 Exhibitionism 35 Norval Glenn 35 Humans 35 masculine feminine 35 cheat DiGuido 35 Superstitious beliefs 35 vulvas 35 APOE genotype 35 phonological processing 35 Col. Ralph Kauzlarich 35 By STEFAN STEVENSON 35 translate pronouns 35 Unplanned pregnancies 35 nonromantic 35 materialistic pursuits 35 2D 4D ratio 35 Vivienne Westwood catwalk 35 societal stigma 35 genital arousal 35 thyroid dysfunction 35 ratlike 35 irregular menstrual cycles 35 nonconscious 35 Knaupf Plasterboard Tianjin 35 Daybreak Undoing 35 crossdressers 35 Metalink Annual Report 35 Competitor Reports deliver 35 Vigorous exercise 35 blatant sexism 35 permissive attitudes 35 Triglyceride levels 35 kinkier 35 sexual objectification 35 Eating disorders 35 chick lit genre 34 GRE MCAT 34 Rev. Zipporah Ndiritu 34 uncaused cause 34 triggerman Rodney 34 Technest Holdings filings 34 hypochondriasis 34 masculine 34 Iroquois Confederacy lands 34 maladjustments 34 barebacking 34 perfectibility 34 sponges soaking 34 evolutionary lineages 34 eusocial 34 Tonight bandleader Doc 34 Relapsing remitting MS 34 Nilo Saharan 34 miseducated 34 Bernardo Bertolucci racy 34 Hormonal contraceptives 34 homo economicus 34 Hole HDB 34 Extramarital affairs 34 feminist critique 34 homosocial 34 Modood 34 Theists 34 Sauropods 34 neuropsychiatrist Louann Brizendine 34 unfeminine 34 socioeconomic inequalities 34 By ALAN BOSWELL 34 Visit divorce#.com 34 intermarket relationships 34 call Pandit Antaryaami 34 materialist philosophy 34 Happily Married Men 34 Christine Gaugler head 34 Cela Conde 34 Betsey Stevenson 34 Schizophrenics 34 Debbie Apuzzo 34 lawyer Joao Paulo 34 EditorsChoice 34 genetic makeups 34 anthropomorphize 34 Christopher Haiman 34 pain catastrophizing 34 By LEE BIERER 34 Lynne LaMaster 34 Asexuality 34 facial symmetry 34 Fo Niemi executive 34 nonhumans 34 Bil Keane hometown 34 Bird feeders 34 Birchtree Swim 34 dualisms 34 Innately 34 Higgs Boson particle 34 Darwinian 34 unmarried cohabitating couples 34 societal 34 masculinities 34 madonna whore 34 inherently sinful 34 Fought landmark palimony 34 Mikio Tadano bristles 34 AOGCC commissioner 34 extroverts 34 defer gratification 34 multivariate analyzes 34 millenials 34 unprotected vaginal 34 Larry Kornze P.Eng