The newsletter of Professor Steve Stewart-Williams. Evolutionary psychology, sex differences, nature and nurture, science, philos... This is an automated Substack Account of https://stevestewartwilliams.substack.com Discover more/Create at: @skystack.xyzhttps://bsky.app/profile/stevestewartwilliams.skystack.xyzhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mkpui5wtxs2nAn Innate Sense of Beauty? • Children as young as four months old have similar aesthetic preferences to adults https://www.stevestewartwilliams.com/p/an-innate-sense-of-beauty30 Apr 2026 12:46 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mkpui5wtxs2nhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mkkjjqyo422nEcholocation in Humans, Altruism in Dogs, and Mental-Health Outcomes of Gender Reassignment • The Nature-Nurture-Nietzsche Linkfest for April 2026 https://www.stevestewartwilliams.com/p/echolocation-in-humans-altruism-in28 Apr 2026 11:52 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mkkjjqyo422nhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mkcy3uh2x22nTop 10 Most Replicable Findings from Behavior Genetics, Part 2: Findings #6-10 • Behavior genetics gets weird https://www.stevestewartwilliams.com/p/top-10-most-replicable-findings-from-behavior-genetics-225 Apr 2026 09:36 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mkcy3uh2x22nhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mk5x74n52c2nKeeping It Casual, Part 2 • The nature and nurture of sex differences in sexual psychology https://www.stevestewartwilliams.com/p/keeping-it-casual-part-223 Apr 2026 11:28 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mk5x74n52c2nhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mjywc4md222nPeople Prone to Corporate Bullshit Tend to Make Worse Leaders • When empty buzzwords signal poor judgment https://www.stevestewartwilliams.com/p/people-prone-to-corporate-bullshit21 Apr 2026 11:08 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mjywc4md222nhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mjreua2pv22nTop 10 Most Replicable Findings from Behavior Genetics, Part 1: Findings #1-5 • The nature of nature and nurture https://www.stevestewartwilliams.com/p/top-10-most-replicable-findings-from-behavior-genetics-118 Apr 2026 10:35 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mjreua2pv22nhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mjqgodamwk2nRecent Human Evolution in Europe • Evolution didn’t stop when we settled down; it sped up https://www.stevestewartwilliams.com/p/recent-human-evolution-in-europe17 Apr 2026 23:46 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mjqgodamwk2nhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mjmdv4ljjc2oKeeping It Casual, Part 1 • Sex differences in interest in casual sex https://www.stevestewartwilliams.com/p/keeping-it-casual-part-116 Apr 2026 11:09 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mjmdv4ljjc2ohttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mjhcwgu2gs2xWho Counts as a Victim? • Liberals and conservatives both want to reduce harm and help victims; they just disagree about who the victims are https://www.stevestewartwilliams.com/p/who-counts-as-a-victim14 Apr 2026 09:04 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mjhcwgu2gs2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mj7rilvd7k2xWarning: Politics May Be Bad for Your Mental Health • A timely reminder https://www.stevestewartwilliams.com/p/warning-politics-may-be-bad-for-your-mental-health11 Apr 2026 09:46 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mj7rilvd7k2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mj2qle4mlk2xThe People Most Confident in Their Political Views Know the Least About Politics • The curious link between ignorance, certainty, and politics https://www.stevestewartwilliams.com/p/the-people-most-confident-in-their09 Apr 2026 10:07 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mj2qle4mlk2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mivq3bm64s2xShould We Trust Social Science Research? • The latest on the replication crisis https://www.stevestewartwilliams.com/p/should-we-trust-social-science-research07 Apr 2026 10:07 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mivq3bm64s2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mio6bphihs2xThe Evolution of Mutual Mate Choice • Why humans are more like the average bird than the average mammal https://www.stevestewartwilliams.com/p/the-evolution-of-mutual-mate-choice04 Apr 2026 10:01 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mio6bphihs2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mijhc5q47k2xAre We Making Progress in the War on Cancer? • The news on cancer is good - even though cancer deaths are rising https://www.stevestewartwilliams.com/p/are-we-making-progress-in-the-war-on-cancer02 Apr 2026 13:03 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mijhc5q47k2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mieggyxfyc2xAIs Are Dumb and Sexist • The latest on whether AIs can reason - and an unexpected gender bias https://www.stevestewartwilliams.com/p/ais-are-dumb-and-sexist31 Mar 2026 12:24 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mieggyxfyc2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mi4kxrdimk2xPrenatal Testosterone, Tinder, and Lab Leak vs. Natural Spillover • The Nature-Nurture-Nietzsche Linkfest for March 2026 https://www.stevestewartwilliams.com/p/prenatal-testosterone-tinder-and28 Mar 2026 10:42 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mi4kxrdimk2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mhuzkexuns2xSizing Up the Sexes • An excerpt from my forthcoming book, A Billion Years of Sex Differences https://www.stevestewartwilliams.com/p/sizing-up-the-sexes25 Mar 2026 09:40 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mhuzkexuns2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mhq2clkw2c2x20 Cognitive Biases That Are Messing Up Your Mind • A field guide to the brain's favorite thinking errors https://www.stevestewartwilliams.com/p/20-cognitive-biases-that-are-messing21 Mar 2026 09:45 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mhq2clkw2c2xhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mhe2eaflzc2zThree More Lines of Evidence for Innate Sex Differences • An excerpt from my forthcoming book, A Billion Years of Sex Differences https://www.stevestewartwilliams.com/p/three-more-lines-of-evidence-for18 Mar 2026 10:01 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mhe2eaflzc2zhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mhcsf3oz722zWho Engages in More Science Denial, Left or Right? • Both sides think the other rejects politically inconvenient science - and both sides are right https://www.stevestewartwilliams.com/p/who-engages-in-more-science-denial14 Mar 2026 09:45 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mhcsf3oz722zhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mgrsw5q44k2rThree Lines of Evidence for Innate Sex Differences • An excerpt from my forthcoming book, A Billion Years of Sex Differences https://www.stevestewartwilliams.com/p/three-lines-of-evidence-for-innate11 Mar 2026 09:21 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mgrsw5q44k2rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mghqyp3qts2r12 Things Everyone Should Know About Wokeness • A data-driven look at the rise, effects, and psychology of one of the major cultural movements of our time https://www.stevestewartwilliams.com/p/12-things-everyone-should-know-about-1a107 Mar 2026 09:06 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mghqyp3qts2rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mg5p67d6422rThe Most Attractive Trait in the World • One weird trick to turn a frog into a prince https://www.stevestewartwilliams.com/p/the-most-attractive-trait-in-the03 Mar 2026 09:16 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mg5p67d6422rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mfomh5lixc2rThe Breaking-Bad Effect, Suicidal Tortoises, and the Genetics of Intelligence in Dogs • The Nature-Nurture-Nietzsche Linkfest for February 2026 https://www.stevestewartwilliams.com/p/the-breaking-bad-effect-suicidal25 Feb 2026 10:08 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mfomh5lixc2rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mfekix4s6c2rWho Really Wants Sex More, Men or Women? • Putting an old stereotype to the test https://www.stevestewartwilliams.com/p/who-really-wants-sex-more-men-or21 Feb 2026 10:20 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mfekix4s6c2rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mf4yyfepx22rFour Cracks in the Nurture Edifice • Why sociocultural explanations for sex differences fall short https://www.stevestewartwilliams.com/p/four-cracks-in-the-nurture-edifice18 Feb 2026 09:17 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mf4yyfepx22rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mf26jdxges2rWaterstones Offers 25% Off A Billion Years of Sex Differences • Pre-order with promo code FEB26 - offer ends February 20 https://www.stevestewartwilliams.com/p/waterstones-offers-25-off-a-billion17 Feb 2026 08:43 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mf26jdxges2rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mesx2uuve22rWhy Evolutionary Psychology Needs Behavior Genetics, and Vice Versa • Twenty key claims about heritability and human nature https://www.stevestewartwilliams.com/p/why-evolutionary-psychology-needs14 Feb 2026 10:06 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mesx2uuve22rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3melgcxtaz22rFive Positions on the Nature-Nurture Issue • The tenth excerpt from my forthcoming book, A Billion Years of Sex Differences https://www.stevestewartwilliams.com/p/five-positions-on-the-nature-nurture11 Feb 2026 10:47 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3melgcxtaz22rhttps://bsky.app/profile/stevestewartwilliams.skystack.xyz/post/3mebee6ahcs2rSmarter People Live Longer • It's not fair, but it's true https://www.stevestewartwilliams.com/p/smarter-people-live-longer07 Feb 2026 11:00 +0000at://did:plc:xkz7eppbh76psj5fot5o3yun/app.bsky.feed.post/3mebee6ahcs2r