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Modern WisdomAug 14, 2023

#667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture

Summary, books mentioned, transcript quotes, and timestamps for #667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture on Modern Wisdom.

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#667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture mentions Gay Fathers, Twin Sons, the Citizenship Case that Captured the World, Entwined Lives, the twin children who survived the Holocaust, and Born Together, Reared Apart with timestamps, quotes, and episode context.

3 books from this episode

And so, I have a book that's coming out August 8th called Gay Fathers, Twin Sons, the Citizenship Case that Captured the World.

if you're really, really new to twin studies, you might want to check my 1999 book called Entwined Lives, where I cover many, many different topics o…

And why did these twins survive when some other ones didn't?

Episode summary
Nancy Segal is a professor at California State University, an author and one of the most prominent twin-study researchers on the planet. What makes you the person you are? Is it your genetics or your environment? When twins are either accidentally or purposefully separated at birth, it presents a fascinating view into this debate, shedding light on the influence of both traits and environments on the outcomes we get in life. Expect to learn the craziest similarities between twins who have been raised apart, how it's possible to have a pair of twins born at the same time to two different fathers, what happens when twins meet for the first time, what you can learn from triplets that you can’t learn from twins, just how big of an impact genes and environment are on the traits we see in people, how important of a role chance plays in our lives and much more...
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Gay Fathers, Twin Sons, the Citizenship Case that Captured the World

The host discusses the book to highlight a unique family situation involving two gay fathers and their struggle with…

Card
Entwined Lives

The host mentioned 'Entwined Lives' as a foundational text for those new to the field of twin studies. The book cover…

Card
the twin children who survived the Holocaust

The host mentions the book to illustrate the resilience and strength of twin bonds in the face of adversity, particul…

Card
Born Together, Reared Apart

The host discusses the complexities of twin studies, particularly focusing on the Minnesota study outlined in 'Born T…

Card
behavioral genetics

The host discusses their passion for behavioral genetics and its connection to twin studies, highlighting the importa…

Card
Deliberately Divided

The host discusses the ethical implications of separating twins for research purposes, referencing their book 'Delibe…

Card
The Identical Strangers

The host discusses the ethical implications of separating identical twins for research purposes, referencing the book…

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Book mentions7
Media mentions3
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What is #667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture about?

Summary, books mentioned, transcript quotes, and timestamps for #667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture on Modern Wisdom.

What are the main takeaways from #667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture?

These are the strongest takeaways surfaced by the transcript, summary copy, and linked mentions for #667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture.

  • The conversation centers on behavior genetics research.
  • A second recurring theme is ethics of twin separation.
  • Referenced books include Gay Fathers, Twin Sons, the Citizenship Case that Captured the World and Entwined Lives.
  • The strongest audience signal points to Readers interested in LGBTQ+ family issues and legal rights and Individuals new to twin studies.

Which books are mentioned in #667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture?

Gay Fathers, Twin Sons, the Citizenship Case that Captured the World, Entwined Lives, and the twin children who survived the Holocaust are the clearest linked books in this episode, each tied back to transcript timestamps and quote cards.

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#667 - Nancy Segal - What Twins Separated At Birth Teach Us About Nature vs Nurture keeps attracting summary-style searches because this page combines episode context, transcript quotes, book references, and direct jump links back into the audio.

Topic and sentiment signals

Aggregated from transcript-derived mention metadata for better topical navigation and citation.

Mention sentiment
Deep Dive(5)Critical Analysis(1)Highly Recommended(1)
Audience signals
Readers interested in LGBTQ+ family issues and legal rightsIndividuals new to twin studiesIndividuals interested in psychology, genetics, and historical resilience.Researchers and students in psychology and behavioral geneticsResearchers and students in psychology and geneticsResearchers and psychologists interested in twin studies

Books Mentioned

The full list below is ranked by how useful each mention is to a listener: stronger recommendation language, clearer quote context, and better timestamp support rise first.

Gay Fathers, Twin Sons, the Citizenship Case that Captured the World cover
Best for Readers interested in LGBTQ+ family issues and legal rightsOften cited around gay fathers and citizenship

The speaker mentions their upcoming book about two gay fathers who decided to raise a family and the challenges they faced regarding their children's citizenship.

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Sentiment: Deep Dive
For: Readers interested in LGBTQ+ family issues and legal rights
Key quote: And so, I have a book that's coming out August 8th called Gay Fathers, Twin Sons, the Citizenship Case that Captured the World.
The host discusses the book to highlight a unique family situation involving two gay fathers and their struggle with citizenship for their twin sons. This narrative illustrates the complexities of modern family dynamics and legal challenges faced by LGBTQ+ families.
Direct Amazon listing · affiliate link
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Entwined Lives cover
Best for Individuals new to twin studiesOften cited around twin studies introduction

The speaker suggests 'Entwined Lives' for those new to twin studies, covering various topics related to twins.

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Sentiment: Highly Recommended
For: Individuals new to twin studies
Key quote: if you're really, really new to twin studies, you might want to check my 1999 book called Entwined Lives, where I cover many, many different topics on twins.
The host mentioned 'Entwined Lives' as a foundational text for those new to the field of twin studies. The book covers a wide range of topics related to twins, making it an essential starting point for anyone interested in this area of research.
Direct Amazon listing · affiliate link
Check price
the twin children who survived the Holocaust cover
Best for Individuals interested in psychology, genetics, and historical resilience.Often cited around parenting and genetics

I also did a book recently this year on the twin children who survived the Holocaust. It's an annotated photograph collection.

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Sentiment: Deep Dive
For: Individuals interested in psychology, genetics, and historical resilience.
Key quote: And why did these twins survive when some other ones didn't?
The host mentions the book to illustrate the resilience and strength of twin bonds in the face of adversity, particularly in the context of the Holocaust. This serves as a poignant example of how genetics and environment interplay in shaping human behavior and survival.
Direct Amazon listing · affiliate link
Check price
Born Together, Reared Apart cover
Best for Researchers and students in psychology and behavioral geneticsOften cited around twin studies methodology

The speaker mentions their book, 'Born Together, Reared Apart', which provides an overview of the Minnesota study on twins.

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Sentiment: Deep Dive
For: Researchers and students in psychology and behavioral genetics
Key quote: In my book, 2012, where I give a whole overview of born together, reared apart, which is the Minnesota study, I reprint from one of our papers, a graph showing the IQ correlation from four or five different reared apart twin studies.
The host discusses the complexities of twin studies, particularly focusing on the Minnesota study outlined in 'Born Together, Reared Apart'. This book provides a comprehensive overview of the genetic influences on behavior, supported by robust findings from various studies.
Direct Amazon listing · affiliate link
Check price
behavioral genetics cover
Best for Researchers and students in psychology and geneticsOften cited around behavior genetics research

Jeffrey Miller once tweeted that every parenting book combined is less useful than one book on behavioral genetics for parents to read.

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Sentiment: Deep Dive
For: Researchers and students in psychology and genetics
Key quote: I always felt that there was some deeper level to this.
The host discusses their passion for behavioral genetics and its connection to twin studies, highlighting the importance of genetic relatedness in social behavior. They emphasize the depth of analysis that twin studies can provide in understanding cooperation and altruism.
Direct Amazon listing · affiliate link
Check price
Deliberately Divided cover
Best for Researchers and psychologists interested in twin studiesOften cited around ethics of twin separation

The speaker mentions 'Deliberately Divided', which discusses twins and triplets adopted apart.

View mention details
Sentiment: Deep Dive
For: Researchers and psychologists interested in twin studies
Key quote: In my 2021 book, Deliberately Divided, I go into that a great deal.
The host discusses the ethical implications of separating twins for research purposes, referencing their book 'Deliberately Divided' to provide a thorough analysis of the topic. They argue against the misguided developmental theories that led to such practices, emphasizing the importance of keeping twins together.
Direct Amazon listing · affiliate link
Check price
The Identical Strangers cover
Best for Researchers and individuals interested in twin studiesOften cited around twins raised apart

It's called The Identical Strangers. It's a really in-depth analysis of the Louise Wise Adoption Agency.

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Sentiment: Critical Analysis
For: Researchers and individuals interested in twin studies
Key quote: I think is unconscionable.
The host discusses the ethical implications of separating identical twins for research purposes, referencing the book 'The Identical Strangers' to highlight a misguided study by the Louise Wise Adoption Agency. This book provides an in-depth analysis of the consequences of raising twins apart and critiques the developmental theories that supported such practices.
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Gay Fathers, Twin Sons, the Citizenship Case that Captured the World
Modern Wisdom · 9:15
And so, I have a book that's coming out August 8th called Gay Fathers, Twin Sons, the Citizenship Case that Captured the World.
Entwined Lives
Modern Wisdom · 1:15:15
if you're really, really new to twin studies, you might want to check my 1999 book called Entwined Lives, where I cover many, many different topics o…
the twin children who survived the Holocaust
Modern Wisdom · 52:14
And why did these twins survive when some other ones didn't?
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Shop This Episode

Pick up the books after you hear them in context.

Gay Fathers, Twin Sons, the Citizenship Case that Captured the World cover
Mentioned at 9:15
Gay Fathers, Twin Sons, the Citizenship Case that Captured the World

The host discusses the book to highlight a unique family situation involving two gay fathers and their struggle with citizenship for their twin son…

Direct Amazon listing · affiliate link
Entwined Lives cover
Mentioned at 1:15:15
Entwined Lives

The host mentioned 'Entwined Lives' as a foundational text for those new to the field of twin studies. The book covers a wide range of topics relat…

Direct Amazon listing · affiliate link
the twin children who survived the Holocaust cover
Mentioned at 52:14
the twin children who survived the Holocaust

The host mentions the book to illustrate the resilience and strength of twin bonds in the face of adversity, particularly in the context of the Hol…

Direct Amazon listing · affiliate link

Movies & Documentaries Mentioned

Documentary

Three Identical Strangers

Confidence: 90%

The mention of 'Three Identical Strangers' relates to captivating stories about twins and their experiences, highlighting the interest in identical twins and triplets.

Documentary

Tell Me Who I Am

Confidence: 90%

A documentary about identical twin men who reveal a lifelong secret to each other, one of whom loses his memory.

Documentary

The Twinning Reaction

Confidence: 80%

A film about the Louise Wise Adoption Agency, focusing on twins and their experiences, made by independent filmmaker Laurie Shinseki.