How we read each other's minds | Rebecca Saxe

TL;DR

This talk explores the problem of understanding other people's minds, focusing on the brain region responsible for this ability, the slow development of this system in children, and how differences in this brain system explain variation in how adults judge others.

Transcript

Today I'm going to talk to you about the problem of other minds. And the problem I'm going to talk about is not the familiar one from philosophy, which is, "How can we know whether other people have minds?" That is, maybe you have a mind, and everyone else is just a really convincing robot. So that's a problem in philosophy, but for today's purpose... Read More

Key Insights

• 💭 Our brains have the ability to understand the thoughts and intentions of others, even with limited information. This is known as the "problem of other minds."

Questions & Answers

Q: How does the Right TPJ differ in children compared to adults?

The development of the Right TPJ takes time, and in children, it is less specialized compared to adults. It becomes more adult-like as children grow older, but even into early adolescence, it is not fully mature.

Q: Can differences in the brain region explain variations in how adults judge others?

Yes, differences in this brain region are linked to differences in how adults think about and judge other people. For example, individuals with more activity in the Right TPJ tend to pay more attention to someone's innocent beliefs, leading them to assign less blame compared to those with less activity in this region.

Q: What is Trans-Cranial Magnetic Stimulation (TMS) and how was it used in the study?

TMS is a tool that temporarily disrupts the function of neurons in a specific brain region using magnetic pulses. In this study, TMS was used to investigate the effect of temporarily disrupting the Right TPJ on people's moral judgments. The findings showed that TMS influenced participants' judgments, suggesting a causal link between brain function and moral decision-making.

Q: Can TMS be used to manipulate moral judgments without people being aware of it?

No, TMS is not a surreptitious technology, and individuals cannot be TMSed without knowing it. The changes observed in moral judgments using TMS were relatively small and only affected people's ability to judge other people's actions, not their own decision-making or actions.

Q: Will understanding the brain region responsible for thinking about other people's thoughts lead to educational recommendations?

There is potential for the findings to inform educational practices, particularly in promoting the development of children's ability to think about other minds. However, the implications of understanding this brain system fully are still unknown, as the study of the distinctive parts of the human brain is a new field of research.

Q: Is there hope for solving the hard problem of consciousness?

While the speaker hopes for a paradigm shift in understanding consciousness, it is called the hard problem for a reason. The nature of consciousness remains incredibly complex, and finding a solution may be unlikely.

Summary & Key Takeaways

• There is a brain region called the Right Temporo-Parietal Junction (TPJ) that is responsible for thinking about other people's thoughts.

• Children take a long time to develop this ability, slowly understanding that others can have different beliefs.

• Even in adulthood, differences in this brain region can explain differences in how we judge others.