Rationally Speaking #62 - Patricia Churchland on What Neuroscience Tells Us About Morality
Jun 4, 2012
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Patricia Churchland, a renowned philosopher and expert in neurophilosophy, dives into the intricate ties between neuroscience and morality. She discusses how evolutionary changes shape social behaviors and the genetic factors that foster human connections. The conversation explores oxytocin beyond its labels, revealing deeper complexities in human behavior. Churchland also connects philosophical insights on morality to ethical reasoning, critiquing societal beliefs about free will and self-awareness through the lens of neuroscience.
Patricia Churchland emphasizes that social values are biologically rooted in brain adaptability and complexity of social structures rather than purely rational constructs.
The podcast critiques folk psychology and discusses how advances in neuroscience may require reevaluating commonly held beliefs about mental states and moral reasoning.
Deep dives
Origins of Social Values
The podcast examines where social values originate, proposing that while basic values related to survival are hardwired into the brain, social values have a different origin. Patricia Churchland argues that social values evolve from the brain's adaptability and the complex social structures observed in mammals. Unlike the long-held belief that reason solely produces our values, she suggests that genetic changes in brain circuitry have allowed us to develop attachment and care for others, which are critical for complex social interactions. This evolutionary perspective shifts the understanding of morality from a purely rational construct to a biologically grounded phenomenon.
Complications in Understanding Moral Behavior
The conversation highlights the complexity surrounding the hormone oxytocin, often dubbed the 'moral molecule,' which is associated with social behaviors like attachment and care. Churchland emphasizes that oxytocin's role in behavior is not straightforward; it can also lead to aggressive protective instincts in mothers. This duality illustrates the need to avoid oversimplified narratives that connect single hormones to moral decision-making, as multiple factors influence behavior. Understanding these intricate biological mechanisms is essential for responsible scientific communication, avoiding sensationalism that could mislead the public.
The Role of Reason in Moral Decision Making
While discussing moral philosophy, Churchland emphasizes that human reasoning plays a crucial role in resolving ethical dilemmas. She argues that values are not merely rational decisions but instead shaped by emotional responses and societal influences from an early age. This perspective aligns with observation that moral reasoning often involves evaluating consequences and negotiating values rather than deriving absolute norms from facts. Thus, ethical frameworks emerge from the interplay of biological instinct and social constructs rather than a pure rationalistic approach.
Challenges of Folk Psychology
The podcast critiques the limitations of folk psychology, suggesting that many commonly held beliefs about mental states may not correspond to biological realities. Churchland explores the concept of eliminative materialism, which posits that some folk psychological concepts may need to be reevaluated or removed as neuroscience advances. She notes that while certain terms like 'belief' may remain relevant, others become obsolete as our understanding of brain function matures. This willingness to adapt our language according to scientific progress underscores the importance of reconciling intuitive understandings with empirical evidence.
The Rationally Speaking podcast is proud to feature another certified genius: Patricia Churchland, a philosopher well known for her contributions to neurophilosophy and the philosophy of the mind, was professor at the University of California San Diego from 1984-2010, and won the MacArthur Genius Grant in 1991. In this episode, she, Massimo, and Julia discuss what philosophy has to say about neuroscience, what neuroscience has to say about philosophy, and what both of them have to say about morality.
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