by Kurt
7 replies
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Anyone see this on Dateline? It was a show dedicated to how our brains can deceive us.

It's actually amazing...

In one test, a stranger walks up to a person on the street to ask for directions.

They are immediately interupted and sperated by two guys carrying a big sign, distracting the test subject. The stranger is "switched" for another person, then the conversation is continued.

It's interesting how many people didn't notice that they were talking to a completely new person, sometimes of a different sex.

Another test has customers approaching a counter. The employee talks to them, then bends down out of site behind the counter to get their stuff. Another person pops up and carries on the conversation, and people don't notice.

In one case, it was a dark haired woman in her 20s first talk to a customer, then a shorter, blonde woman in her 50's "pops up" and takes her place. They aren't trying to trick people with identical twins.

If you're interested, check it out:
msnbc.com Video Player

(This will make you think twice about eye-witness testimony.)
  • Profile picture of the author MikeAmbrosio
    Interesting, for sure. I have heard of similar tests done, but not like this.

    For the record, it's been said many times that eyewitness testimony in a case is usually unreliable, and both sides much prefer hard evidence over witness testimony.

    I know MY memory ain't worth a damn - especially with little details. I have to write stuff down.

    Mike

    Originally Posted by Kurt View Post

    Anyone see this on Dateline? It was a show dedicated to how our brains can deceive us.

    It's actually amazing...

    In one test, a stranger walks up to a person on the street to ask for directions.

    They are immediately interupted and sperated by two guys carrying a big sign, distracting the test subject. The stranger is "switched" for another person, then the conversation is continued.

    It's interesting how many people didn't notice that they were talking to a completely new person, sometimes of a different sex.

    Another test has customers approaching a counter. The employee talks to them, then bends down out of site behind the counter to get their stuff. Another person pops up and carries on the conversation, and people don't notice.

    In one case, it was a dark haired woman in her 20s first talk to a customer, then a shorter, blonde woman in her 50's "pops up" and takes her place. They aren't trying to trick people with identical twins.

    If you're interested, check it out:
    msnbc.com Video Player

    (This will make you think twice about eye-witness testimony.)
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  • Profile picture of the author KenThompson
    Interesting, Kurt. I'd be hard-pressed to think I wouldn't notice
    a switch like that. But maybe everyone would say that. However
    it's not out of the question with people who deal with people all
    day long. I imagine after awhile all the faces run together, and
    they stop paying close attention to little things like a face, hair
    color, etc.

    I've also read the same things about eyewitness testimony. Even
    multiple eyewitnesses to the same thing will have radically different
    details about the event.


    Ken
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  • Profile picture of the author seasoned
    Oh, the idea of a person running through a classroom that is WEIRD and easily described being missed, or WILDLY misidentified is LEGEND!

    I recently saw a site. I wish I had the URL. It was about something called "the invisible gorilla phenomenon", as I recall. They had several people passing a ball. Some in one attire, and some in another. OH YEAH, and another guy dressed as a gorilla. When asked to count the people passing the ball in one attire, they tended to miss the gorilla COMPLETELY!

    But FEW have "perfect" memories. In fact, many scientists DOUBT such a thing exists. And people may not be that observant and may think the sudden action caused them to be a bit confused. ALSO, people don't want to be embarrased or embarass, etc... so they are more likely to discount such a change if the person is "obviously the same person". Would YOU want to tell a person in her 20s that you thought she was 50? Or a man that you thought he was a woman, etc...? I mean he or she continued on with the conversation, right? I could see it happening.

    BTW LUCKILY I was right about the name of the study: Study: Gorilla-Test Update Confirms Human Blind Spots - TIME

    Steve
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  • Profile picture of the author Kurt
    It isn't so much a memory experiment as a recognition one...Some people do notice a switch, but most don't.

    If you have 10 minutes, watch part 3:
    msnbc.com Video Player
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  • Profile picture of the author whateverpedia
    Tried watching the video, but gave up after "your video is loading" for 20 minutes.

    It has been done before though by Derren Brown:

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  • Profile picture of the author KimW
    If you liked the dateline segment, you might want to check out this :
    Mind Hacks
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  • Profile picture of the author LinChick
    I've seen videos of the invisible gorilla phenomenon before. My husband and I have discussed it and I freely admit that even though I notice the gorilla in the video, I definitely would not have noticed it were I in the situation and in the moment.

    I've really been enjoying looking at that Mind Hacks site - the blog has some interesting posts, including the one about researchers implanting false symptoms of psychological disorders. Makes you think, though, if they can implant false symptoms, could they perhaps "implant a cure," so to speak? Probably gives the practice of hypnosis a bit more credence than before.
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