Professor Paul Bloom: Welcome to the last class. Before starting the lecture I just want to do some final procedural issues. Again, your reading responses have been completed. Your essays have been all completed and the grades will be available sometime next week. The teaching fellows are currently grading them like crazy. Your experimental participation requirement is up until May 7th. Please finish it by then. If not--just please finish it by then. Your exam's on Monday. Last class--somebody asked me whether I was going to post an old exam and I said, "Well, you don't need it because you--I already posted a midterm and it looks like the Midterm," and one of the teaching fellows e-mailed me and essentially said, "Why are you so damn lazy?" [laughter] So, I posted the old final.心理学空间&du)CD9b:CR
1SX8K3I a7e0Some of you require special accommodations for the Final. The arrangements will be precisely the same as for the Midterm and Judy York should be contacting you to set up the arrangements. If there are any problems with that, definitely contact me as soon as possible but you should be hearing from Judy York concerning special arrangements.心理学空间*z p"kH5Q-u*K-P7m
Finally, the review sessions are going to be held tomorrow and on Friday. Please note: It turns out the original class schedule for the Thursday review session is booked. The review session will be held in this room from 6 o'clock to 8 o'clock and once again, the teaching fellows have graciously agreed to run these review sessions.心理学空间!wH+k ~-O
r7i"YG{fN0Okay. This lecture will be a some slightly shorter lecture than usual. What I first want to do is finish off the discussion of clinical psychology from last lecture and then have a little brief discussion about some very interesting research on happiness. We talked--we ended last lecture with a discussion of some early--some of the history of treating mental illness and we saw that it was rather gruesome, unsuccessful, and arbitrary. For the most part, we do better now, and Dr. Nolen-Hoeksema reviewed some of the therapies with focus on therapies for depression. The textbook talks in detail about therapies for different disorders including schizophrenia, anxiety disorders, and so on. The question which everyone is interested in is, "Does therapy work?" And this proves to be surprisingly difficult to tell. Part of the problem is if you ask people who go into therapy, "Did you get better after therapy?" for the most part they'll tell you that they did but the problem is this could be a statistical byproduct of what's called "regression to the mean."心理学空间,mf2@-h!E)\R#pV?@0`
'Y ~R.w@{0So, the idea looks like this. This line plots how you feel from great through okay to awful and it goes up and down and in fact in everyday life you're going to--some days are going to be average, some days will be better than average, some days worse than average. You could plot your semester. You could do a plot every morning when you wake up or every night before you go to bed. You could put yourself on a graph and it'll come out to some sort of wiggly thing. Statistically, if something is above average or below average it's going to trend towards average just because that's a statistical inevitability. When do people go to therapy? Well, they go to therapy when they're feeling really crappy. They go to therapy when they're feeling unusually bad. Even if therapy then has no effect at all, if it's true that people's moods tend to go up and down after you feel really bad you'll probably improve rather than get worse. And so this could happen--the normal flow could happen just even if therapy has no effect at all.心理学空间0nu1fpG
And so, simply getting better after therapy doesn't tell you anything. On the worst day of your life you could do naked jumping jacks on the roof of your college for ten minutes. I guarantee you your next day would probably be better. That doesn't mean naked jumping jacks are helping you. Rather, it just means that the day after the worst day of your life usually is not as bad as the worst day of your life. It can get worse, but usually it just trends to average. What you've got to do then is you have to take people at the same point who would get treatment and compare them to people who do not get treatment or what we call a "control group." And this is an example of this. So, this is for people who are depressed. This is statistically equal. They start off pre-therapy. They all go for therapy but because in this example there's a limited number of therapists, some of them are put on a waiting list and others get a therapist. It's arbitrary. It's random, which is--which--making it a very good experiment. And in this example, you could see those who received cognitive training were better off. They had lower depression scores than those that received no therapy at all.心理学空间z$@E)Bn!@2rB_
In general, in fact, we could make some general conclusions about therapy. Therapy by and large works. People in treatment do better than those who are not in treatment and that's not merely because they choose to go into treatment. Rather, it's people who are in desperate straits who seek out help. Those who get help are likely to be better off than those that don't get help. Therapy for the most part works. We can't cure a lot of things but we can often make them better.
Different sorts of therapy works best for different problems, and again, depression proves to be an illustrative example. If you have everyday unipolar depression, that is, you feel very sad and you show other symptoms associated with depression, an excellent treatment for you is some combination of cognitive behavioral therapy and possibly antidepressant medications like SSRIs. If you have bipolar depression, the cognitive behavioral therapy is useless but medication is your best bet and so on for all of the other disorders. Each disorder has some sort of optimal mode of treatment. If you suffer from an anxiety disorder, cognitive behavioral therapy can be of help. If you're a schizophrenic it's probably not going to be of much help at all. And so, different disorders go best with different sorts of therapies. Finally, some therapists do better than others. So, for reasons that nobody fully understands, there are good therapists and then there are better therapists and there are bad therapists. And there's great individual differences in the efficacy of an individual therapist.心理学空间+j.H:e ?Y
~fld0T;Ni0Finally, putting aside then the difference in therapies and the difference in therapists, does it make sense to say that therapy, in general, works? And the answer is "yes." And this is in large part because of what clinical psychologists describe as "nonspecific factors." And what this just is a term meaning properties that all therapies, or virtually all therapies, share and I've listed two of them here.心理学空间-@e_4@?*})\V{K
6W"ih N7~K hT0One of them is "support." No matter what sort of therapy you're getting involved in, be it a psychoanalyst or a behavior therapist or a cognitive therapist or a psychiatrist who prescribes you medication or someone who makes you go through different exercises or keeps a journal, you have some sense of support, some acceptance, empathy, encouragement, guidance. You have a human touch. You have somebody who for at least some of the day really cares about you and wants you to be better and that could make a huge difference.心理学空间/M"M%{C"h@u^(Ttd
Also you have hope. Typically, there's an enthusiasm behind therapy. There's a sense that this might really make me get better and that hope could be powerful. Sometimes this is viewed under the rubric of a placebo effect, which is that maybe the benefits you get from therapy aren't due to anything in particular the therapist does to you but rather to the belief that things are going to get better, something is being done that will help you. And this belief can be a self-fulfilling prophecy. "Placebo effect" is often used sort of in a dismissive way, "Oh, it's just a placebo," but placebos can be powerful and even if it's useless from a real point--from a psychological theory point of view, even if the therapist runs around and dances while you – I have dancing on my mind now – while you sit in the chair and watch him dance; if you believe the dancing is going to make you better, it may well help. Okay. That's all I'm going to say about therapy. Any questions about therapy? Yes.心理学空间 Az \#EpM(y
wg:~ kSi0Student:[inaudible]心理学空间%QZ \D!m5l?$h;T.?Q
Professor Paul Bloom:Fair enough. The question is the assumption of regression to the mean seems sort of arbitrary because it depends what the mean is. Always after the fact you can apply an average to it and say, "Look. This is the average," but how do you know beforehand? It's a good point. When you talk about regression to the mean, it adopts certain assumptions. The assumption is there really is an average throughout much of your life and things go up and down within that average and for the most part that's true for things like mood. For most of us, we have an average mood and we have bad days and we have good days. It's always possible that you have a bad day and then from there on in it's just going to go down and down and down but statistically the best bet is if you have a bad day you're going to go back up to the mean. It's--in some way you don't even have to see it from a clinical point of view. You could map it out yourself. Map out your moods and the days where you're most depressed sooner or later you're likely to go up. Similarly, on the happiest day of your life odds are the next day you're going to go down and there's nothing magical about this. This is just because under the assumption that there really is an average in--built into one--each of us. If human behavior was arbitrary, it would be like a random walk but it's not. We seem to have sort of set points and aspects of us that we fall back to that make the idea of a mean a psychologically plausible claim. Yes.心理学空间)}%aa4PJSw{
Student:[inaudible]
:ohs4`,dh@Q9~0Professor Paul Bloom:That's a good question. Yes. In that study it's a perfectly good hypothesis that the sort of anxiety of being told, "I see you've come here for help. We can't give it to you. Congratulations. You're a control group" [laughs] causes anxiety. In other studies the control group doesn't know they are the control group. So sometimes you can do an intervention where you say, "Congratulations, everybody in Intro Psych who did very low on the depression inventory," which many of you filled out, "We're going to do something to you." And then the rest of the people don't even know that they haven't been chosen. So, you're right. It's a perfectly good point. Knowing you're not chosen could have a deleterious effect and the way to respond to that is you have other studies that don't use that same method.心理学空间#|ci7CQn,Sx-_
eN%|J6l$M,{h0Okay. I want to end with happiness and it's a strange thing to talk about in psychology. Most of psychology focuses on human misery, most of clinical psychology. There is the psychology we spoke about through most of the semester on vision and language and social behavior, but typically when people think about interventions what they think about is people having problems and then we figure out how to make them better. They are schizophrenic, they are depressed or anxious, they are just not making it in life, and psychologists try to figure out how to make things improve. And in fact, a lot of the information I gave you at the beginning of the lecture last class where I reviewed all of the disorders is in this wonderful book calledDSM-IV, The Diagnostic and Statistical Manual of Mental Disorders.If you ever really want to get--If you really [laughs] want to diagnose people and come to have a belief in your own mental instability, browsing through that book is a treat. Everything that can go wrong in mental life from Aspergers syndrome to fetishes to paranoid schizophrenia is all in that wonderful book and--but a lot of psychologists have been disturbed by the focus of our field on taking bad people, people who are broken, people who are sad, and bringing them up to normal. And they've started to ask can psychology give us any insight into human flourishing, how to take people who are--who--how to study people who are psychological successes, how to take people who are psychologically okay and make them better. And this is the movement known as "positive psychology." And it has its own handbook now,The Handbook of Positive Psychology,listing psychological strengths, listing virtues, ways--what psychology tells us about how we can be at our best.
Some of this work in positive psychology is, in my mind, real crap. A lot of it is some combination of new age banalities by people who are striving to get more grant funds and end up onTimemagazine. On the other hand--and so, some of it is really bad. You could imagine this attracts every self-help huckster you could imagine. On the other hand, a lot of this work is quite neat, quite interesting and quite promising. And what I want to do is tell you what I think is the most interesting research from this movement concerning happiness.心理学空间pc;e6Q7We
Dw:W` t8MJ0Now, there are a lot of good books on this and I'm going to recommend books, which I haven't been doing much in this class. Marty Seligman is the pioneer of positive psychology and he's written an excellent book calledAuthentic Happiness.Jonathan Haidt is a brilliant young scholar who's done--also done a lot of work on disgust and morality. He did the "sex with dead chicken study" we discussed earlier. This is one of my favorite books by –Happinessby Nettle, because it's smart, it's beautifully written and it's extremely short. And Dan Gilbert's book,Stumbling on Happiness,is a very, very funny book and very smart book and is now onThe New York Timesbestseller list. So, there's no shortage of books on happiness.心理学空间DAq(j8P
9iE"m(}|$e0So, the starting point is--And a lot of research on happiness starts with a basic question: How happy are you? And we're psychologists so tell us on a scale of one to ten where five is average, ten is super-duper. The most common answers, interestingly enough, are high. They're seven or eight. How many people in this room would give themselves a seven or an eight? Okay. How many a nine or a ten? All right. How many a ten? Good, good, maxed out on happiness. It turns out that most people think that they're pretty happy. There's a Lake Wobegon effect with happiness. Most people think they're very happy. In fact, most people think they're happier than most people, which shouldn't really happen.心理学空间"Hj7i~Hn
This question, "How happy are you from one to ten?" has been asked all over the world. So--and it turns out there are slight differences depending on how old you are. There are slight differences depending on your place within a country, California versus New York. There are slight, subtle differences between men and women at different points, somewhat paradoxically. Although women are more vulnerable to depression than men, still on average women are slightly happier than men. The country-by-country data is quite interesting. In one study they looked at forty-two countries. The happiest--well, let me see. The happiest people on earth--well, first, no country believed they were unhappy, the people in no country of these forty-two countries. I mean, you're thinking there are some really bad countries to live in and I don't know if they were tested but of these forty-two everybody seemed--said they were above average. The happiest people on earth? The Swiss. [laughter] They think--they're just like--they're just so happy. I was talking to people about this last night and they suggested chocolate. [laughter] The saddest people on this--on the sample? The sad Bulgarians. [laughter] You are wondering what about Americans. Americans are actually pretty happy, 7.71. We are a happy country full of happy people.
Now, I'm going to talk about a lot of research that's based on the data you get when you ask people how happy they are from a scale of one to ten. But I'm going to be honest and tell you there are reasons to be cautious about these numbers. And the reasons come from a couple of experiments. In one experiment they asked people inside a psychology department where there was a photocopy machine. They went up to people--the people were going up to the photocopy machine to make copies and when they were done making copies they asked them, "How happy are you with your entire life?" There were two groups. Group A, they put a dime on top of the photocopy machine so people walked over there, "I'm going to [inaudible]. Oh, a dime. Well." The other group, no dime. It turned out that when asked "How good is your whole life?" [laughter] group A reported [laughter] greater life satisfaction overall in their entire lives.
Another study asked people how happy you are with your whole life on sunny days like today and people said they were happier on sunny days than rainy days. What's interesting is you could make this effect go away if you ask immediately before "How's the weather?" These were done by phone interviews. And logically, what seems to go on is that if you're asked how's the weather, you're "Oh, it's really sunny outside," and then when people are asked "How happy are you with your whole life?" people then say, "Oh, okay. I'm going to take into account the sunny-ness when I give my answer.心理学空间i;U-W3AWbYj
d6f;Z;be+mD2`3Pq0Okay. So, what is happiness? What are people rating when they're answering these sort of questions? And this is an extraordinarily difficult question and one could devote a seminar to discussing it, but one simple answer from an evolutionary point of view is that happiness--forget about "what is happiness?" Ask "what's happiness for?" just like we've asked what language is for, or what laughter is for, or what hunger or lust is for. What's happiness for? And one answer is happiness is a goal state that we've evolved to pursue. It's a signal that our needs have been satisfied. Happiness is the carrot we're running towards that makes us take care of our lives. We want to be happy. An example of this is food. You're not very happy if you're starving. You want to be satiated, you want to be satisfied, so you seek out food to fill your belly. Once you've done it, you're happy.心理学空间]&~aA.jy~+guP*q
Steven Pinker summarizes the keys to happiness in a nicely evocative passage: "We are happier when we are healthy, well-fed, comfortable, safe, prosperous, knowledgeable, respected, non-celibate, in love." How many people here have got all of those right now? Oh, come on. [laughter] Some people. Oddly enough, the person who said he was a ten didn't--does not raise his hand. Okay. [laughter] So this is- And this makes out--you get all your needs satisfied, your belly is full, people love you, you're getting sex regularly, you're smart, you're rich, you're happy, but as Pinker points out it's not that simple.
Here's the problem. You, Americans in this century, you are now healthier, better fed and so on than just about anyone in history but you're not happier. That's the puzzle. In particular, these studies asking about happiness have been around for a long time. People in the 1950s did not make as much money, did not eat as well, did not live as long, suffered from more diseases, were more vulnerable in a hundred different ways, yet they were--are as happy as you are now. You are as happy as your parents were and they were as happy as your grandparents. Moreover, in poor countries people don't have the shelter, the knowledge, the protection, the safety, yet, for the most part, there's not a huge effect on how rich a country is and--on how happy the people are.心理学空间 A(F#Q b.Q$YG7QU
%h;o#X.]8lY0Furthermore, there are great individual differences in happiness among people whose basic needs are met. For the most part, everybody in this room is fed and sheltered and safe. Some of you are prosperous, some of you are knowledgeable, a couple non-celibate, and-- [laughter] but even among that group you vary in your happiness, and that's kind of a puzzle. And to explain the puzzle we need to talk about a few surprising facts about happiness and I'll present three of them.
fwh(Q&`0The first is happiness doesn't change as much as you think. In particular, happiness is not as sensitive to what happens--your happiness is not as sensitive to what happens in your environment as you might think it is. Part of the reason for this is that there appears to be a strong heritable basis for happiness. So, just as we talked about the domains of personality and intelligence, there is some genetic determination, not entirely but some, in how happy you are. And some people talk in terms of a genetically determined set point. So, you have a sort of natural happiness level, maybe a range. To put it in extreme form, some people are genetically predisposed to be pretty sour, others to be pretty cheerful. Well, that can't be it. Identical twins are very similar in their happiness but, as with everything else we've discussed, they're not identical. What about life events? Wouldn't life events change your happiness? And here we're entering one of the great discoveries of happiness research.
Think for a moment. What's the worst thing that could happen to you? And then ask how much would it change your happiness. Now, think for a moment. What's the best thing that could happen to you? And ask how much would it change your happiness. And the research in happiness suggests that your gut feelings are probably wrong. And here's a couple of case studies.心理学空间yXZm\8]R p
For many people a very bad thing that could happen to you is to be paralyzed from the neck down in an accident. It turns out obviously, common sense, that when this happens it makes people very unhappy. It makes them depressed, they think their life is over, they feel terribly sad, but not for that long. After about a year after being paralyzed from the neck down, people's happiness comes back up pretty much to where it was before, suggesting that there's a temporary effect but not a permanent one. Many people believe that winning many, many millions of dollars in the lottery will make you happier and it does. When you open up that winning ticket and you say, "I won one hundred million dollars," you say, "Woo, hoo!" You are honest to God very happy. You'd say, "Hell, I'm a 10.5, I am very happy." A year later you are not as happy. In fact, lottery winning may be a terrible case where people--where it goes the reverse of what you expect. What happens when you win a lot of money is it often wrenches you away from your family, your work and your friends and leads you to depression and sadness but even mundane events that would make you happy--that you think would make you happy don't seem to last.心理学空间1x;_Vj&k-M9ceu
Dz`6r.t0In some research by Dan Gilbert and others, they've asked young assistant professors who are coming up for tenure, and tenure in a university system is a good thing to get because it gives you lifetime job security, "How happy would you feel if you got tenure? How happy would you feel if you didn't get tenure?" Prior to the last election, they asked people "How happy would you be if it was President Bush? How happy would you be if it was President Kerry?" And it turns out people radically overestimated the effects of these things. Having your favorite candidate win is not such a big deal. Having your favorite candidate lose is not such a big deal either. Getting tenure or not getting tenure are really big when it happens. Six months later and a year later your happiness doesn't seem to be affected.