Lecture 8 hyz.docx - Lecture 8 Living in Groups I Study 40 the social brain hypothesis Larger amygdala-> larger social groups ability to represent and

Lecture 8 hyz.docx - Lecture 8 Living in Groups I Study 40...

This preview shows page 1 - 3 out of 10 pages.

Lecture 8 Living in Groups I Study 40 the social brain hypothesis Larger amygdala -> larger social groups; ability to represent and understand a lot of ppl Because the cost of maintaining a large brain is so great, it is intrinsically unlikely that large brains will evolve merely because they can. Large brains will evolve only when the selection factor in their favor is sufficient to overcome the steep cost gradient Study 41 Amygdala volume and social network size in humans Amygdala volume correlates with the size and complexity of social networks in adult humans There exists association between social network variables and cortical thickness in three cortical areas, two of them with amygdala connectivity These finding indicate that the amygdala is important in social behavior Study 42 Social pain – Loneliness, health, and mortality in old age Social rejection is fundamental need Social pain is like hunger -> signals of dying; fundamentally connected to others Survival-relevant goal conflicts in the dACC Several survival goal conflicts produce activations in the dACC The evolution of cooperation The processes allow us to exist in the social group Specialization makes us worry about different things Mental disorders might exist bc of social roles Dynamics of mind -> understand others, know that if they're doing the thing The social contract Corporation Rules to obey Social norms and social rules. Agree upon a sets of rules. Ppl who grow up poor, ppl don't trust others, no idea of 10 years from now, want the stimuli now, social disabilities The necessity of trust Need to trust your own thoughts -> to believe in future you Study 43: evaluating face trustworthiness: a model based approach Look at trustworthy and untrustworthy faces Amygdala sensitive to this. Should I have more social interaction with this person. First impression. Catching features of trustworthy face But you cannot do future planning?? Hyper responsive to both trustworthy faces and untruthiness
Image of page 1
Trustworthiness to be the key to the amygdala - processes very fast Important features How Trustworthy are we? Study 44 a trust game (David Dunning) Procedure o give participants $5 o Choose can either keep $5 or give to some random unknown responder o If chooser gives, then $5 is quadrupled to $20 o Responder can either split the money equally, giving $10 back to chooser, or keep the entire $20 Predictions: "what % of ppl will give back $10" "40-50%" Actual: way more people giving back (80%) -> doing against there self-interest o Human brain is designed not only for self-interest Study 45 getting to know you: reputation and trust in a two-person economic exchange Playing the investment repeatedly -> Me learning how trust worthy you are through trials Trustworthy is updated to give you decision-making qualities Trustworthiness has value representation Caudate o Reward learning update representation of the other player o associated with
Image of page 2
Image of page 3

You've reached the end of your free preview.

Want to read all 10 pages?

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors