Professor Paul Bloom: This is going to begin a two-lecture sequence on social psychology on how we think about ourselves, how we think about other people, how we think about other groups of people. We've talked a lot about the capacities of the human mind and some of these capacities involve adapting and dealing with the material world. So, we have to choose foods, we have to navigate around the world, we have to recognize objects, we have to be able to understand physical interactions. But probably the most interesting aspect of our evolved minds is our capacity to understand and deal with other people.心理学空间'af McC?c5b
We are intensely interested in how other people work. The story that was a dominant news story in 2005 was this. And some of you--this--for those of you who aren't seeing the screen, is the separation of Jennifer Aniston and Brad Pitt. I remember where I was when I first heard about this. [laughter] And it's an interesting sight. Just remember--stepping back. As psychologists we have to question the natural. We have to take things that are commonsense and explore them. And one thing which just happens is, we're fascinated by this stuff. We're fascinated by the lives of celebrities. We're fascinated by the social lives of other people. And it's an interesting question to ask why. And this is one of the questions which I'm going to deal with in the next couple of lectures but before I get to the theory of social psychology I want to talk about an individual difference.心理学空间!V!vn#XU3{pc
5j7F(pVk3p0So, we devoted a lecture early on--of a couple of weeks ago, to individual differences across people in intelligence and personality. I want to talk a little bit about an individual difference in our social natures and then I want people to do a test that will explore where you stand on a continuum. That test is the piece of paper you have in front of you. Anybody who doesn't have it please raise your hand and one of the teaching fellows will bring it to you. You don't know what to do yet with it so don't worry. The test was developed actually by Malcolm Gladwell who is a science writer--in his wonderful bookThe Tipping Point.And as he introduces the test, Gladwell recounts another experiment done by Stanley Milgram, of course famous for his obedience work but he did a lot of interesting things.
M;hy~6S*rY"O VN0And one classic study he did was he gave a package to 160 people randomly chosen in Omaha, Nebraska and he asked these people to get the package somehow – and this was many years ago before the internet, before e-mail – to get the package to a stockbroker who worked in Boston but lived in Sharon, Massachusetts. What he found was that most people were able to do it. Nobody, of course, knew this man but they knew people who might know people who would know this man. So, most people succeeded. Most people were able to get the packages to this man and it took at maximum six degrees of separation, which is where the famous phrase comes about that we're all separated from another person by six degrees of separation. This is not true in general. This was a very--a single experiment done within the United States, but the idea is appealing, that people are connected to one another via chains of people.心理学空间r0X&m#^0gy]
But what Milgram found that was particularly interesting was that in about half of the cases these packages went through two people. That is, if you plot the relationships between people--We can take each person in this room, find everybody you know and who knows you and draw a line, but if we were to do this you wouldn't find an even mesh of wires. Rather, you'd find that some people are clusters. Some people are what Gladwell calls "connectors." It's like air traffic. Air traffic used to be everything flew to places local to it but now there's a system of hubs, Chicago O'Hare for instance or Newark where planes fly through. Some people are hubs. Some people are the sort of people who know a lot of people. Some people in this room might be hubs, and it is not impossible to find out.
#{&b0G/\wF-l7G0P1E0The piece of paper you have here is 250 names chosen randomly from a Manhattan phone book. They capture a range of ethnicities, different parts of the world, different national origins. Here's what I'd like you to do. And I'll give about five minutes for this. Go through these names and circle how many people you know. Now, the rules of this are, to know somebody you have to--they have to know you back. So, if it's a celebrity--Well, here--one of the names here is Johnson. Now, I've heard of Magic Johnson but Magic Johnson has never heard of me, so I cannot circle it. On the other hand, our department chair is Marcia Johnson. She has heard of me, so I could circle it. Go through and circle it. Circle all the people you know who know you. Those are the people you're connected to. If you know more than one person with the same last name, circle it twice. If you don't have this piece of paper and you want to participate, please raise your hand and one of the teaching fellows will bring it to you. I'm going to talk a little bit more about this while people go through this.
The issue of connections between people is intellectually interesting for many reasons and might allow us to develop some generalizations about how people interact. The game of Six Degrees of Separation has, of course, turned into a famous movie trivia thing revolving around the actor Kevin Bacon, I think chosen just because it rhymes with "separation." And the game of "Six Degrees of Kevin Bacon" is played by taking any actor and computing how many steps it would take to get to Kevin Bacon. And some computer scientists have developed this. They've gone through each of the quarter million actors and actresses on the international movie database and computed their "Bacon number." And the Bacon number is the number of steps it takes for them to get to Kevin Bacon. So for instance, Ed Asner was in the movie Change of--;"JFK" with Kevin Bacon. So, Ed Asner has a Bacon number of one. Elvis Presley was in the movie "Change of Habit" with Ed Asner and that's his closest connection to Kevin Bacon. So, Elvis Presley has a Bacon number of two.心理学空间S'J+u~7{T,W8z
0c%t#F.Bd?*w A6e n?0It turns out that if you look at the 2.5--sorry, the quarter million people on the movie database and compute their Bacon number, the average Bacon number is 2.8. That's how many steps your average person is away from Kevin Bacon. You could then, for any actor or actress, compute the most connected one. So, the most connected one would be the one for whom the quarter million are, on average, the most connected to. And the answer of the most connected actor or actress is reasonably surprising. Does anybody want to guess? I'll start you off with the wrong answer and this, by the way, can be found on this web site. It's not John Wayne. John Wayne has been in many movies, 180 movies, in fact, over sixty years, but he isn't well connected at all because mostly he was in westerns so we saw the same people over and over again. Meryl Streep also isn't it because Meryl Streep has the misfortune of playing only in good movies. [laughter] So, she has no connection with people like Adam Sandler and John-Claude Van Damme. [laughter] Guess. Any guesses?心理学空间#rDFQ9\hu
iF%{+bg0Student: Christopher Walken心理学空间*k(SQ%pG4Q7I} zX
,@G-uO~+W[7^8UE0Student: Nicholas Cage
Professor Paul Bloom: Christopher Walken is a good one. We could look it up. I only know a few names here. Christopher Walken is not a finalist. Nicolas Cage is an interesting case. Has Nicolas Cage been in good movies? I don't want to get--I'm going to get more controversial than I want to.
Student: A guy who is one step above an extra. He's like a B-list actor at best.
$N7H }%D_0Professor Paul Bloom: Pardon me? The most connected guy? The most connected guy, and I think this shows that you're right, is Rod Steiger. He's the most connected actor in the history of acting because it isn't that he's been in more movies than everybody else. Michael Caine has probably been in the most movies of any person on earth, but he's [Rod Steiger] been in all sorts of movies. He was in "On the Waterfront," "In the Heat of the Night," and really bad movies like "Carpool." He's been in dramas and crime serials, thrillers, westerns, horror movies, science fiction, musicals. Now, some people are like Rod Steiger. So, some people in their day-to-day lives have many interactions and I think one of the things we know from interacting with people is we can distinguish them from other people.
o5Jpou5@jt0How many people have finished their things right now? Okay. I know one person in the department who is one of the most connected people I know on earth. If I wanted--If I really had to talk to Rumsfeld, I'd go to this person and say, "Can you get me in touch with Rumsfeld?" If I wanted to get somebody whacked, I'd ask this guy. [laughter] Then I know someone else in the department and, as best I know, I'm the only person she knows. [laughter]
A X F9w{;s|zo$K@0So, how many people scores below ten on this? How many between ten and twenty? Between twenty and thirty? Thirty and forty? Between forty and fifty? Fifty and sixty? How many people scored above sixty? Anybody above sixty? Gladwell has done this in a lot of places. The average is twenty-one among a college crowd. Some people score as high as over 100. The older you are, the more--the higher you tend to score, maybe obviously, not--the longer you've been in the country the higher you tend to score. Journalists tend to score reasonably high, academics not so high, and--but what Gladwell points out is some people have the gift. Some people are more social than others and this connects in all sorts of interesting ways.心理学空间j4B@3_{'zIom
The issue of connection has social factors and it's one answer that sociologists give for why it's good to go to Yale. So, one answer is, well, because of the great intellectual benefits. Put that aside. Let's be more cynical here. Another answer is that you develop powerful friends. And that's closer, but the interesting answer sociologists come to is it's not so much you develop powerful friends; rather, you develop powerful acquaintances. Through Yale you know a lot of people and they don't have to be close friends but they are acquaintances. And sociologists point out that for a lot of aspects of your life, like getting a job, acquaintances matter, connections matter, and the connections you establish by going to a place like Yale hold you in good stead for the rest of your life, above and beyond any intellectual qualities that this place may offer.心理学空间3@*`8@5~`b0?
(_x {Dv0Here's what we're going to do for the next lecture and a half, two lectures. We're first going to talk about the self. Then we're going to talk about the self and other; basically, differences between how we think of ourselves and how we think about other people. Then we're going to talk exclusively about how we think about other people and then we'll talk about how we think about groups like Harvard students or gay people or black people. I'll start with my favorite finding of all time and this is about the self. And this is about the spotlight effect.
(e1n.wm_xkt4p3cdxi0So, my mornings are often rushed because I have two kids. So, I get up and sometimes I don't set the alarm and I get up late; I stagger out of bed; I wake the kids; I greet the servants; I get ready; [laughter] I make breakfast. I run out of the house and then usually around 3 o'clock somebody points out, in one case a homeless man, that I have a big glob of shaving cream in my ear or--because I neglected to actually look in the mirror while I shaved. Or I have once been to a party and I found my shirt was misaligned, seriously misaligned, not one button but--Anyway, [laughter] so--and so I feel when this happens I'm very immature. And I basically feel this is the end of the world, this is humiliating and everybody notices. And so the question is, how many people notice when something happens? And the spotlight effect--Well, before talking about my favorite experiment ever, there is an episode of "The Simpsons" that provides a beautiful illustration of the spotlight effect. And then it has a beautiful illustration of psychological testing, so I'll give you them quickly one after the other. [clip playing]
So, Tom Gilovich, a social psychologist, was interested in the question of the spotlight effect, which is when we wear a pink shirt to work, shaving cream in our ear or whatever, do we systematically overestimate how much other people notice? He did a series of experiments. And in one experiment what he did was he got in the subjects – standard Intro Psych drill – and said, "I want you to wear a T-shirt for the next day and I want it to have a picture on it," and he got them to wear T-shirts that had pictures on it that were the most embarrassing pictures that they could have on it. It turns out that if you ask people what's the worst picture to have on the T-shirt that you are wearing, the number one answer is Hitler tied with Barry Manilow. [laughter] The best pictures to have on your T-shirt are Martin Luther King Jr. and Jerry Seinfeld.
"R9^g!\4wh {0It turns out that people--And then he had them go about their day and asked them, "How many people noticed your T-shirt?" And then the psychologists went around and they asked the people, "How many of you noticed this person's T-shirt?" And it turned out they got it wrong by a factor of about two. They thought, say, 100 noticed, but fifty people noticed. And across study after study after study Gilovich and his colleagues have found support for the spotlight effect, which is that you believe that people are noticing you all the time but they aren't. They're busy noticing themselves. And this is actually a useful thing to know.心理学空间qt$?h'x B,f G
\_C^X-W+yqG0Gilovich got interested in this because he's interested in the psychology of regret. And it turns out that if you actually ask dying people, or really old people basically, "What do you regret from your life?" they regret the things as a rule that they didn't try. But when you asked them why they didn't try it the answers tended to be "I would look silly." And it turns out, interesting to know, that people just don't care as much as other people think you are. You could take that as good news or bad news but the spotlight is not on us as much as we think it is.心理学空间0JY+L,`ZCn U#u&H
-`LQ1oq{B nA0There's a second effect Gilovich discovers called "the transparency effect." And the transparency effect is quite interesting. The transparency effect is that we believe that we're more transparent than we are. I need somebody up here who thinks that he or she is a bad liar. Just--I just need you to say three sentences. I'll even tell you what it is ahead of time. I'm going to ask you three questions: "Have you been in London? Do you have a younger sibling?" and "Do you like sushi?" I want you to answer with one of those answers there. I want you to lie about one of them. The task will be for everybody else to recognize and guess which one you're lying about. Do you want to go up? Yeah. And I will even write down which one you should lie on. So, I want you to lie as to that number. Okay? Have you ever been in London?