A discussion with Marta Kowal on beautification and what predicts it. Marta Kowal (PhD) is a post-doctoral researcher at the IDN Being Human Lab, Institute of Psychology, University of Wrocław, Poland. Marta's academic background is in evolutionary psychology, and her research primarily focuses on mate attraction, physical attractiveness-enhancing behaviors, and romantic love, particularly from a cross-cultural perspective. During her PhD program, under the guidance of her supervisor, Professor Piotr Sorokowski, Marta secured a grant from the Polish National Science Centre to explore beauty-enhancing behaviors across different cultures. Marta takes one of the leadership positions in an extensive international consortium of over 400 scientists from more than 100 countries passionately committed to facilitating large-scale cross-cultural research projects.   Marta's website: https://martakowal.com/   If you want to listen to my audio course on human evolution, you can find it here: https://mackenmurphy.gumroad.com/l/humanevolution?layout=profile If you want to donate to support Species, you can do so, here: https://donorbox.org/keep-species-free If you want to keep up with my work, everything is here: https://linktr.ee/mackenmurphy Timestamps 0:00 Intro 5:08 231 minutes daily on beauty? 10:38 The Benefits of Beauty 12:23 Beauty: Not (Just) a Social Construct 19:35 Collecting Big Data 23:34 Gender & Beautification 48:51 Age & Beautification 54:28 Social Media & Beautification 1:08:25 The Beautiful Beautify More 1:12:57 Wealth, Education, Politics & Beauty 1:24:32 Intrasexual Competition All The Way Down 1:28:44 The Pathogen Prevalence Hypothesis 1:36:57 Cultural and Individual Differences in Strategies 1:47:14 Conclusion 1:50:10 Outro

A natural history of infidelity and a history of science on the topic. Listen and learn about the oldest known laws in history, fish that get pessismistic without their boyfriend, the costs of monogamy, the ovulatory shift hypothesis (and a conspiracy theory about it), the mate-switching vs. dual-mating debate, and so much more. If you want to listen to my audio course on human evolution, you can find it here: https://mackenmurphy.gumroad.com/l/humanevolution?layout=profile If you want to donate to support Species, you can do so, here: https://donorbox.org/keep-species-free If you want to keep up with my work, everything is here: https://linktr.ee/mackenmurphy Timestamps: 0:00 Intro 12:38 Theme 13:42 The Costs of Monogamy 20:01 The Many Strategic Functions of Infidelity 27:16 The Primary Reason Men Cheat 29:21 Intro to The Dual Mating Strategy 32:02 Ovulatory Shifts in Mate Preferences 34:26 Intro to the Mate Switching Hypothesis 36:13 Initial Impressions 42:15 Testing Mate-Switching vs. Dual-Mating 46:35 Addressing Critiques 48:16 The Usual Caveats 50:26 The Manosphere Reaction 51:31 Rollo’s Conspiracy (lol) 55:01 Nature’s Curse, Nature’s Gift 58:15 Outro Selected references (most key information is in, or referenced in, these texts): Murphy, M., Phillips, C. A., & Blake, K. R. (2024). Why women cheat: testing evolutionary hypotheses for female infidelity in a multinational sample. Evolution and Human Behavior, 45(5), 106595. Buss, D. M., Goetz, C., Duntley, J. D., Asao, K., & Conroy-Beam, D. (2017). The mate switching hypothesis. Personality and Individual Differences, 104, 143-149. Gangestad, S. W., & Thornhill, R. (1998). Menstrual cycle variation in women's preferences for the scent of symmetrical men. Proceedings of the Royal Society of London. Series B: Biological Sciences, 265(1399), 927-933. Gangestad, S. W., Thornhill, R., & Garver-Apgar, C. E. (2005). Adaptations to ovulation: Implications for sexual and social behavior. Current Directions in Psychological Science, 14(6), 312-316. Also: Finkelstein, J. J. (1968). The Laws of Ur-Nammu. Journal of cuneiform studies, 22(3-4), 66-82. Hicks, T. V., & Leitenberg, H. (2001). Sexual fantasies about one's partner versus someone else: Gender differences in incidence and frequency. Journal of Sex Research, 38(1), 43-50. Laubu, C., Louâpre, P., & Dechaume-Moncharmont, F. X. (2019). Pair-bonding influences affective state in a monogamous fish species. Proceedings of the Royal Society B, 286(1904), 20190760. Scelza, B. A. (2011). Female choice and extra-pair paternity in a traditional human population. Biology Letters, 7(6), 889-891. Scelza, B. A. (2013). Choosy but not chaste: Multiple mating in human females. Evolutionary Anthropology: Issues, News, and Reviews, 22(5), 259-269. Scelza, B. A. (2014). Jealousy in a small-scale, natural fertility population: The roles of paternity, investment and love in jealous response. Evolution and Human Behavior, 35(2), 103-108. Stewart-Williams, S. “Nurture Alone Can’t Explain Male Aggression.” Nautilus. April 26, 2019. http://nautil.us/blog/nurture-alone-cant-explain-male-aggression Yildiz, F. (1981). A tablet of codex Ur-Nammu from Sippar. Orientalia, 50(1), 87-97.

An audio essay on human nature, followed by an interview with primatologist Dr. Susan Cheyne. Susan is the co-director of the Borneo Nature Foundation International and the Borneo River Initiative for Nature Conservation and Communities, she is the Vice Chair of the IUCN Section on Small Apes, and she is also a Senior Lecturer at Oxford Brookes; she has been studying gibbons for about 27 years. Our conversation is wide-ranging, but centers on gibbons. We discuss gibbon locomotion, life among gibbons, the nature and function of gibbon song, gibbon violence, monogamy, and infanticide (and lack thereof), and other subjects. Enjoy. Dr. Cheyne's research: http://www.susancheyne.com  IUCN Section on Small Apes: https://gibbons.asia/   Timestamps:  0:00 Are humans naturally monogamous? 17:27 Introducing today's subject and guest 20:25 Gibbon overview (interview starts) 31:57 Why do humans have twins? 34:02 A day in the life of a gibbon 38:57 Studying gibbons 40:37 Forgotten apes 44:06 Monogamy 1:09:27 Violence 1:11:34 Singing 1:17:49 Intelligence 1:23:28 Conservation   Sources relevant to the introduction:  Stewart-Williams & Thomas | "The Ape That Thought It Was a Peacock" | 2013 Fisher | "The Anatomy of Love" | 2016 Ryan & Jethá | "Sex at Dawn" | 2010 Kramer | Pew Research | 2020 Marlowe | Behavioural Processes | 2000 Chapais | Evolutionary Anthropology | 2013 Schacht & Kramer | Sec Behavioral and Evolutionary Ecology | 2019 Shankman | "The Mead–Freeman Controversy Continues" | 2018 (I'm not sure if this view is correct; once again, you can find academics on both sides of this.)

Explore the manosphere with expert Louis Bachaud, detailing its factions like PUAs, MRAs, MGTOW, incels, and 'Red Pill' community. Critique the ideologies, debunk misconceptions about sex differences, and delve into the evolution of online male groups. Discover the complexities of the manosphere, its use of evolutionary psychology, and the challenges in studying internet culture and gender dynamics.

Today, we explore the befuddling (and surprisingly complex) mystery of the human beard. Our guide is Dr. Barnaby Dixson, a human behavioral ecologist at the University of the Sunshine Coast who uses interdisciplinary methods to investigate human mate preferences across cultures.  His extensive work has bettered our understanding of a wide variety of physical traits; most relevant to today's discussion, he is one of the primary contributors to our understanding of beards. We discuss the evolution of facial masculinity and facial hair, and their role in attractiveness and intimidation across various contexts. You can learn more about Dixson, here: https://www.usc.edu.au/staff/dr-barnaby-dixson Relevant sources are mostly in Dixson’s past publications: https://scholar.google.com.au/citations?user=LE_ROqQAAAAJ&hl=en But also, see: https://docs.google.com/document/d/1vbEZV65uWCcG3E3Qzk-DEuy2m3rodw07WIt3l6meMSo/edit?usp=sharing

William Costello is an expert on incels, a rising star in the field of evolutionary psychology, and the latest protégé of Dr. David Buss. In this conversation, we discuss incel violence, demographics, mythology, perception vs. reality, and solutions to inceldom, among other things. There's still time to participate in Costello's cross-sex mind-reading study, here: https://utexas.qualtrics.com/jfe/form/SV_38KyEyGDOs4stN4 You can keep up with Costello on Twitter, @CostelloWilliam: https://twitter.com/CostelloWilliam?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Eauthor  

Psychologist Alexander discusses dating psychology, debunking misconceptions, exploring gender differences in mate selection, online men's communities, promiscuity, evolutionary perspectives, the mating crisis, and dating advice on fitness and education.

Just when you thought it was safe to go back in the water... a brand new episode of Species. Come listen and learn about their secret social lives, how to survive a shark attack, and some mind-blowing stats. Bibliography: https://docs.google.com/document/d/1Ayzr57teXk06LE21jN9LH934wXhOzIRW9KbKiBeCUVw/edit?usp=sharing

I'm extremely busy and, unfortunately, pausing production on Species, at least for most of this month. If you sent me a donation in January and you want a refund, contact me through mackenmurphy.org, and I will be sure to send it back to you. My sincerest apologies.

Dr. Robert Plomin, a pioneer in behavioral genetics, discusses how genes impact behavior, clarifies common confusions in the field, and addresses criticisms. Topics include genetic influence on behavior, predispositions, parenting, relationships, psychiatric disorders, self-acceptance, and ethical considerations of gene editing.