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2010年6月24日 星期四

Good Bye to Good Memories

Everyone thinks that he has an excellent memory until he discovers the embarrassing truth! This is  Restak's message in one of the chapters of his book The Naked Brain. In the chapter entitled "Make My Memory", he says that people will often say that even though generally their memories fade with time, there is an exception. They'll say that if something is sufficiently emotionally arousing, they'll remember it for years. Is that so?

To Restak, this type of "flashbulb memory", e.g the events of 911, this heightened memory of some emotionally arousing events is often taken to be a kind "gold standard of accuracy." But not so! Heike Schmolck of the Baylor College of Medicine, recorded what his subjects said three days after the verdict of the O J Simpson trial, then 15 and then 32 months later and found that after 15 months, only half of what the subjects remember match their original and only 11% had major discrepancy but after 32 months the figures were 29% and and 40% respectively. He found that the longer the time since the relevant event happened, the more the brain "re-arranged the memory of such events: "While we remember situations very well that went along with the emotions, emotions don't help us memorize facts.".  Richard McNally of Harvard, another memory expert said that " in many instances, memory for the central gist of something that happened is retained, whereas memory for details fades or changes.".

Something called "memory morphing" ie. the creation of false memories of something which never actually happened is already being practised on us by marketers. Research by market-oriented psychologists say that 25% of normal adults will accept the suggestion that they had been lost at age 5 in a shopping mall and been rescued by an elderly person or that as a child they had spilled a bowl of punch at a wedding. According to a paper entitled "Make My Memory: How Advertising Can Change our Memories of the Past", people can with imaginative suggestion, be led to believe that they had experiences that were manufactured. If one were told to imagine being lost at age 5, we are twice as likely than the controls, to express 2 weeks later, that the event actually happened. The technical term for this is "imagination inflation.". Thus many marketers will add phrases like "original", "old-fahioned", "since 1924" etc. to their products to provide their customers with the basis for forming a false memory, an illusion of a childhood experience they never had.

We are more suggestible than we think. In an experiment, participants drank an unpleasant-tasting orange drink spiked with salt and vinegar, then looked at an advertisements suggesting that the drink was "refreshing" and were then asked whether they liked it. A good proportion of the participants reported that they found the drink "refreshing".! Our memories are not "recalled": they are "reconstructed" from different sensory modes. Hence, they are " frequently lost, distorted or drastically altered," says Restak. Our state of mind at the time at the time of recall will also affect such recall. If we are sufficiently depressed, we may even alter our memories of what seemed happy at the time to such an extent that they took on a dark and forboding tone. "The more social neurosceintists delve into the bramble bush of human memory, the less secure we should feel about the reliability of our own memories."

If, we are shown, for example, a trailer of a film of an upcoming movie and formed an impression and are then shown a professional review either positive or negative, even our "memory" of how we originally felt may change according to a study by Kathryn Braun and Gerald Zaltman of Harvard Graduate School of Business Administration, even when the participants were specifically reminded to respond according to their initial opinion, not their opinion after reading the reveiw. Braun says, "Consumers can be influenced to recall prior experience differently and in a manner consistent with a marketing communication, without being aware that what they recall has changed"! Moreover, they were not even aware that they had altered their memory of their first impression! This is called "backward framing." But in "forward framing", we are told ahead of time what we are likely to experience when we see a particular movie. If we are shown a positive review, people are more likely to see the movie. That's why we see so many positive reviews on the internet of the relevant films being shown. In an experiment with a rigged Disney advertisement suggesting that children visiting Disneyland would have the chance to shake hands with Bugs Bunny (something impossible because Bugs Bunny is a Warners Brothers character), yet 16% of the adults who read the ad "recalled" meeting Bugs Bunny  during a childhood visit to Disneyland but no one who had not read the rigged ad recalled such a meeting! Braun says that "In some sense, life is a continual memory alteration experiment where memories continually are being shaped by new incoming information. And in marketing the alteration will occur whether or not that was the intent of the marketer." Therefore, she warns us that we ought to be aware of that power and that we might have been influenced, without our even being aware of it.

Marketing people are now using contextual advertising to positively influence the customer's feelings about their products. This is how Gerald Zaltman describes it: "A Coke ad depicting teens dancing at a party to a particular style of music activates one neuron cluster, thus producing a particular experience of Coca-Cola. Antoher ad showing a baby polar bear and baby seal sharing a Coke activates a different neuron cluster, thus producing yet another experience. The two social settings depicted in the ads have different meanings for an individual and thus are likely to activiate different internally stored Coke associations.". This applies several principles of memory: we understand something new by associating it with a known past experience; memories are generalized based on typical rather than specific examples; each time we remember something, we unconsciously induce subtle changes in the details of that specific recollection. An advertisement will thus be most effective if it presents information combined with a subtle emotional underpinning.

We are entering the age where science is being used in the interest of commerce. Brand loyalty is being built by associating a particular brand with pleasant and positive emotional experiences because the cost of acquiring new customers is about 5 times the cost of maintaining establshed ones. According to Restak's investigation, making brand loyalists out of just 5 % more customers leads, on average, to an increase in profit per customer between 25 and 100 %. That is what the "no question asked"  return policies are all about! We are misled through the activation of specific regions in our brain associated with the generation of emotions by having positive emotions being subtly and imperceptibly linked to the relevant products by the advertisers suggesting true or even possibly "false" memory association! If we are not vigilant, we shall be the unwitting victims of our psychology!.

6 則留言:

  1. Again, you've brought up another amazing topic, say "dump" our good memories. But why not dispose our bad memories? Is it challenging enough to face new difficulties or harshness in life, better than lingering on past happiness, since the past is history...? We should prepare ourselves for the future, but not dwell in the past, even if the past is joyfully happy!!!
    [版主回覆06/24/2010 19:53:00]The point is that our memories may not be as good as we think they are! And they can be manipulated by others without our even knowing about it! I don't think I ever suggested dumping anything. The "Good Bye" in the title is meant to suggest that we say good bye to our "illusion" that our memories are good ie. that they are accurate or reliable records of what actually happened! But I can't agree with you more that we should'nt allow our lives to be wasted lingering in our past, good or bad. If we look after the present well, the future will look after itself!

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  2. memory is not absolutely reliable in my experience
    that's why i use my blog to write down those beautiful moments in my life
     
    [版主回覆06/24/2010 23:38:00]Yes, our memories play many tricks upon us: we are subconsciously affected by so many things: by sublimal suggestions, by our need to conform, by our need to protect our self-image, by our previous beliefs, by our need to be consistent, by our memory of other memories, by our subjective hopes, fears, desires, by the attrition of time etc. Before certain of our feelings get blurred and erased like images etched upon sand by the waves of time, we must hurry to convert them into rather less easily obliterated forms or they are lost forever.  

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  3. Black Leopard,  you suggested that we "dispose of bad memories". This is a good suggestion. But there is no "delete" button in our brain, as in a computer. So we can't press any "delete" botton about "bad memories". Our memories have been put there by evolution for a purpose: to remind us of dangers, risks, or experiences which are not conducive to the continuance, nurturance of life. They are our "evolution-built" warning system. Hence they are always there and from time to time, they need to be recharged, rather like worn out batteries. The "re-charging" normally goes on in the dark, beneath the level of our consciousness but sometimes, there may be "leaks", rather like what happens in a less than perfectly contructed piece of hi-fi equipment which does not have "perfect channel separation" when the signal in one channels passes through the "gates" on to the circuit of the other channel. In this analogy, the information in the "unconscious" channel gets "leaked" on to the "conscious" channel. Alternatively, our memory, which works in "clusters" may be "switched" on through stimulation of any one of our sensory modes by which the relevant memories are stored in our brain e.g sight, hearing, taste, smell, touch. This happens in a sense, "automatically" , because we cananot control which of the "sensory buttons" may get switched on at any one point in time. That's because we do not know in advance what kind of sensory stimulus we may receive from the external world until "after" we have actually received such external stimulus e.g something we read, something we heard, some images we saw etc. 

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  4. Black Leopard, Cont'd.
    But there is definitely something we "can" do once the "bad/good memories" have been switched on. We can consciously decide NOT to allow them to continue to stay within our consciousness. We "interrupt" them. This is what the Buddha taught.  This takes a bit of training of course. To Buddha, anything except the present may be a source of suffering. If the past is unhappy, we re-experience the unhappiness. If the past is happy, we will be rendered unhappy because by comparison with the present, the present will be less happy and as human beings, we ALWAYS desire to be happy rather than to be unhappy. But then, notwithstanding this perfectly legitimate and perfectly "natural" desire, we simply CANNOT  go back to our happy past and we OUGHT NOT go back to re-suffer (something absolutely stupid)  our unhappy past. So either way, we will be unhappy but in the PRESENT, in the here and now. That is why the great Buddha advises us to live and to concentrate our attention only in the present and to do whatever it is that we have to do to make our life "happy" or at least less "unhappy" but in the HERE AND NOW! So no past, no future, only the present! That is the great secret of happiness! Yet that secret has been around for more than 2000 years! Only that not very many people know about it, or even if they know about it, they do not believe in it, and even if they they believe in it, they do not practice it. I learned that a couple of years ago and have been practising it, to wonderful effect. But from time to time, I relapse into my old ways. That's why I must remind myself constantly of this lesson which I have learned from the great Buddha. More training in meditation, more awareness!

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  5. “Suggestible memory” is a strange thing. In the company I worked for many years ago, we were served tea/coffee twice a day. The drinks came punctually every day at a fixed time. One day while sitting in the conference room, with my colleagues, I was waiting for my coffee at the time when the drink was supposed to come. Somehow, the tea-lady was late that day. So I asked curiously about the late serving of drinks. One of my colleagues was a playful guy. He said to me: Common Peter, you have just had your coffee. You see, the tea-lady has even cleared away the tea cups.” I didn’t realize that my colleague was playing a joke on me. I thought I was forgetful that day, and I even seemed to feel the lingering taste of coffee at the back of my tongue. The incident became a often quoted joke afterwards.
    [版主回覆06/25/2010 11:02:00]
    If you realize that we do not have a "tabula rasa" type of brain and if you think of our brain as just a mad jumble of nerves, of dendrites, of myriad connections between dendrites which constitute the so-called neural pathways with multiple links and feed-back loops between different systems concerned with certain partially but not completely specialized types of sensory, communication, recall function. If you think that such networks relate to certain perception (5 modes: eye, ears, taste, smell, touch) analytical, synthesizing function which in turn are modulated by our autonomic and sympathetic nervous system mediated through the amygdala, the thalamus, the hypothalamus, the cingulate ( which regulate thought and action through emotions) which in turn are connected to our temporal lobes ( for both linguistic analysis and use and for global perception), our pre-frontal and frontal cortex (responsibile for fine tune analysis) which in turn are connected to our musculo-sketal and endocrine systems ( for the generation of various hormones to facilitate particular types of physiological reactions) and with considerable overlapping functions of each part of our brain and with different systems, then the wonder is not that we do make mistakes from time to time but the that we still make so "few" mistakes in our "memory recall" which in fact is closer to a "synthesis" or a "re-creation" or "re-generation" of data from various sub-systems.!

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  6. Thank my, my dear friend.
    I get it...no matter good or bad memories...
    [版主回覆06/26/2010 10:53:00]That's something good for me to remember!

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