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Many Minds

Many Minds

De: Kensy Cooperrider – Diverse Intelligences Summer Institute
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Our world is brimming with beings—human, animal, and artificial. We explore how they think, sense, feel, and learn. Conversations and more, every two weeks.Diverse Intelligences Summer Institute 2020-2025 Ciencia
Episodios
  • From the archive: How should we think about IQ?

    From the archive: How should we think about IQ?
    Jan 14 2026
    Hello friends, and happy new year! We're gearing up for a new run of episodes starting later in January. In the meanwhile, enjoy this pick from our archives. ------ [originally aired October 16, 2024] IQ is, to say the least, a fraught concept. Psychologists have studied IQ—or g for "general cognitive ability"—maybe more than any other psychological construct. And they've learned some interesting things about it. That it's remarkably stable over the lifespan. That it really is general: people who ace one test of intellectual ability tend to ace others. And that IQs have risen markedly over the last century. At the same time, IQ seems to be met with increasing squeamishness, if not outright disdain, in many circles. It's often seen as crude, misguided, reductive—maybe a whole lot worse. There's no question, after all, that IQ has been misused—that it still gets misused—for all kinds of racist, classist, colonialist purposes. As if this wasn't all thorny enough, the study of IQ is also intimately bound up with the study of genetics. It's right there in the roiling center of debates about how genes and environment make us who we are. So, yeah, what to make of all this? How should we be thinking about IQ? My guest today is Dr. Eric Turkheimer. Eric is Professor of Psychology at the University of Virginia. He has studied intelligence and many other complex human traits for decades, and he's a major figure in the field of "behavior genetics." Eric also has a new book out this fall—which I highly recommend—titled Understanding the Nature-Nurture Debate. In a field that has sometimes been accused of rampant optimism, Eric is—as you'll hear—a bit more measured. In this conversation, Eric and I focus on intelligence and its putatively genetic basis. We talk about why Eric doubts that we are anywhere close to an account of the biology of IQ. We discuss what makes intelligence such a formidable construct in psychology and why essentialist understandings of it are so intuitive. We talk about Francis Galton and the long shadow he's cast on the study of human behavior. We discuss the classic era of Twin Studies—an era in which researchers started to derive quantitative estimates of the heritability of complex traits. We talk about how the main takeaway from that era was that genes are quite important indeed, and about how more recent genetic techniques suggest that takeaway may have been a bit simplistic. Along the way, Eric and I touch on spelling ability, child prodigies, the chemical composition of money, the shared quirks of twins reared apart, the Flynn Effect, the Reverse Flynn Effect, birth order, the genetics of height, the problem of missing heritability, whether we should still be using IQ scores, and the role of behavior genetics in the broader social sciences. Alright folks, lots in here—let's just get to it. On to my conversation with Dr. Eric Turkheimer. Enjoy! A transcript of this episode is available here. Notes and links 3:30 – The 1994 book The Bell Curve, by Richard Herrnstein a Charles Murray, dealt largely with the putative social implications of IQ research. It was extremely controversial and widely discussed. For an overview of the book and controversy, see the Wikipedia article here. 6:00 – For discussion of the "all parents are environmentalists…" quip, see here. 12:00 – The notion of "multiple intelligences" was popularized by the psychologist Howard Gardner—see here for an overview. See here for an attempt to test the claims of the "multiple intelligences" framework using some of the methods of traditional IQ research. For work on EQ (or Emotional Intelligence) see here. 19:00 – Dr. Turkheimer has also laid out his spelling test analogy in a Substack post. 22:30 – Dr. Turkheimer's 1998 paper, "Heritability and Biological Explanation." 24:30 – For an in-passing treatment of the processing efficiency idea, see p. 195 of Daniel Nettle's book Personality. See also Richard Haier's book, The Neuroscience of Intelligence. 26:00 – The original study on the relationship between pupil size and intelligence. A more recent study that fails to replicate those findings. 31:00 – For an argument that child prodigies constitute an argument for "nature," see here. For a memorable narrative account of one child prodigy, see here. 32:00 – A meta-analysis of the Flynn effect. We have previously discussed the Flynn Effect in an episode with Michael Muthukrishna. 37:00 – James Flynn's book, What is Intelligence? On the reversal of the Flynn Effect, see here. 40:00 – The phrase "nature-nurture" originally comes from Shakespeare and was picked up by Francis Galton. In The Tempest, Prospero describes Caliban as "a born devil on whose nature/ Nurture can never stick." 41:00 – For a biography of Galton, see here. For an article-length account of Galton's role in the birth of eugenics, see here. 50:00 – For an account of ...
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    1 h y 34 m
  • From 'On Humans': Can the brain understand itself?

    From 'On Humans': Can the brain understand itself?
    Dec 31 2025
    Hello there, friends! We hope you're having a restful holiday, or a lively holiday, or whatever mix of those you prefer. As the year draws to a close, we at Many Minds are taking a much needed pause ourselves. But we wanted to share with you an episode from a podcast that we've been following for some time called On Humans. It's hosted by Ilari Mäkelä. It looks at humanity from all angles to understand where we come from and where we're going. The episode we're sharing features an interview with biologist and historian of science, Matthew Cobb; he's also the author of the book, The Idea of the Brain: The Past and Future of Neuroscience. In it, Ilari and Matthew take a zoomed-out view of the human brain and of our quest to understand it. This episode is actually part of a 5-part mini-series that On Humans did all about the human brain. So if you enjoy it, you may want to check out that broader series. Alright friends, have a great close of 2025 and a great start to 2026. We'll see you in January with our first episode of the new year. In the meanwhile, enjoy this offering from our friends at On Humans. The original show notes for this On Humans episode can be viewed here. You can follow the On Humans podcast through their newsletter or on Bluesky.
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    1 h y 1 m
  • In search of names

    In search of names
    Dec 18 2025
    Alright, friends—we've come to the end of the 2025 run of Many Minds! Our final episode of the year is an audio essay by yours truly. This is a classic format for the show, one that we only do every so often. Today's essay is about names. It's about the question of whether animals have something like names for each other. And it's also about a deeper question: What even is a name? How do humans use names? How does the historical and ethnographic record kind of complicate our everyday understanding of what names are. I had a lot of fun putting this together, and I do hope you enjoy it. Now, the holiday season is a time when people might be shopping around for new podcasts to listen to. That makes it a great time to recommend us to your friends and family and colleagues. You can think of it as an especially thoughtful gift, one that's absolutely free, and that keeps on giving throughout the year. Speaking of gifts, as an addendum to this episode you'll find a little stocking stuffer after the credits. It's a reading of a poem that figures prominently in today's essay. Without further ado, here is my essay—'In search of names.' Enjoy! A text version of this essay will be published shortly. Notes 2:00 – The text of 'The Naming of Cats' by T.S. Eliot is here. See also the full collection, Old Possum's Book of Practical Cats. The lines about cats' taste preferences and cats having different kinds of minds comes from another poem in the collection, 'The Ad-Dressing of Cats.' 3:00 – The 2019 study finding that cats know their names, and the 2022 study showing that cats know the names of their friends. 4:00 – For an overview of research on dolphin "signature whistles," see here. 5:00 – For the 2024 study reporting name-like rumbles in elephants, see here. 6:00 – For the 2024 study reporting vocal labels for individuals in marmosets, see here. A critical response to the study is here; the authors' response to the criticism is here. 12:00 – For overviews of cross-cultural variation in names and naming practices, see here, here, here, and here. Richard Alford's 1988 study, published in book form, is here. 13:30 – The study reporting name signs in Kata Kolok is here. 15:00 – For research on expectations based on the sounds of people's names, see here and here. 16:00 – For recent work on the "face-name matching effect," see here. For the study on "nominative determinism" in the medical profession, see here. (Note that, while this latter study does report empirical data, its rigor is questionable. And, yet, at least one other study has reported similar findings.) 17:30 – For the example of over-used names in Scotland, see here. 19:30 – For discussion of names in New Guinea, see here. For examples of research on "teknonymy," see here and here. For discussion of Penan "necronyms," see here. 20:30 – For an overview of name taboos, see here. For more on "alexinomia," see here. 22:30 – For an example of recent work on "name uniqueness," see here. 23:00 – William Safire's column on dog names is here. The study of gravestones in the world's oldest pet cemetery is here. Many Minds is a project of the Diverse Intelligences Summer Institute, which is made possible by a generous grant from the John Templeton Foundation to Indiana University. The show is hosted and produced by Kensy Cooperrider, with help from Assistant Producer Urte Laukaityte and with creative support from DISI Directors Erica Cartmill and Jacob Foster. Our artwork is by Ben Oldroyd. Subscribe to Many Minds on Apple, Stitcher, Spotify, Pocket Casts, Google Play, or wherever you listen to podcasts. You can also now subscribe to the Many Minds newsletter here! We welcome your comments, questions, and suggestions. Feel free to email us at: manymindspodcast@gmail.com. For updates about the show, visit our website or follow us on Bluesky (@manymindspod.bsky.social).
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    29 m
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