Open to Debate Is Parenting Overrated? (Encore)
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Sep 9, 2026 
Therapist and parenting expert Ann Pleshette Murphy, psychologists Paige Harden and Nancy Segal, and behavioral geneticist Robert Plomin face off over nature and nurture. Do genes outweigh ordinary parenting? How do love, education, poverty, peers, autism support, and social identity shape lives? Twin studies, DNA research, adoption, and the limits of genetic determinism all enter this lively debate.
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Twins Reveal The Limits Of Shared Parenting
- Nancy Segal says identical twins raised apart often resemble each other as much as twins raised together.
- Adopted siblings typically grow less alike over time, suggesting shared family environments contribute less to many measured traits.
Cinnamon Shows How Parents Shape Experience
- Ann Pleshette Murphy describes identical twins whose identical cinnamon preference caused conflict in one family but acceptance in another.
- The example shows how parental responses can transform a genetic predisposition into stress or adaptation.
Genes Set Risks Parents Shape Outcomes
- Genetic predispositions influence traits, but parents affect how children function through support, treatment, resources, and emotional responses.
- For autism, the initial condition may be highly heritable while outcomes depend partly on available care and opportunity.
