How reliable is your memory? | Elizabeth Loftus

2,406,922 views ・ 2013-09-23

TED


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Translator: Ainize Sarrionandia Reviewer: Jone Aliri Lazcano
00:12
I'd like to tell you about a legal case that I worked on
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Laneko kasu batez hitz egin nahi nuke
00:16
involving a man named Steve Titus.
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Steve Titusei buruzkoa.
00:20
Titus was a restaurant manager.
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Titus jatetxe bateko gerentea zen.
00:23
He was 31 years old, he lived in Seattle, Washington,
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31 urte zituen eta Seattlen bizi zen, Washingtonen,
00:27
he was engaged to Gretchen,
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Gretchenekin konprometituta zegoen,
00:29
about to be married, she was the love of his life.
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ezkontzear zen, bera zen bere bizitzako maitasuna.
00:32
And one night, the couple went out
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Gau batean, bikotea irten egin zen
00:34
for a romantic restaurant meal.
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jatetxe batean afari erromantiko batera.
00:37
They were on their way home,
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Etxera bidean,
00:39
and they were pulled over by a police officer.
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polizia batek geratu zituen.
00:42
You see, Titus' car sort of resembled
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Titusen autoak beste baten antza zuen
00:45
a car that was driven earlier in the evening
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gau hartan ikusitako beste batena
00:49
by a man who raped a female hitchhiker,
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emakume bat bortxatu zuen gizon batena,
00:52
and Titus kind of resembled that rapist.
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eta Titusek bortxatzailearen antza zuen.
00:56
So the police took a picture of Titus,
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Beraz poliziak argazki bat atera zion,
00:59
they put it in a photo lineup,
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errekonozimendu frogan jarri,
01:01
they later showed it to the victim,
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eta biktimari erakutsi zizkioten argazkiak
01:03
and she pointed to Titus' photo.
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eta biktimak, Titusen argazkia seinalatu zuen.
01:06
She said, "That one's the closest."
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Eta esan zuen "Hau da antzekoena".
01:09
The police and the prosecution proceeded with a trial,
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Poliziak eta salatzaileak epaiketa eskatu zuten
01:13
and when Steve Titus was put on trial for rape,
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eta Steve Titus bortxaketagatik salatzerakoan,
01:16
the rape victim got on the stand
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bortxaketako biktima altsatu
01:19
and said, "I'm absolutely positive that's the man."
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eta esan zuen, "ziur nago bera dela".
01:23
And Titus was convicted.
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Eta Titus kondenatua izan zen.
01:26
He proclaimed his innocence,
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Errugabea zela aldarrikatu zuen,
01:28
his family screamed at the jury,
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bere familiak epaileei oihukatu zien,
01:30
his fiancée collapsed on the floor sobbing,
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emaztegaia negarrez lurrera erori zen,
01:33
and Titus is taken away to jail.
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eta Titus kartzelan sartu zuten.
01:37
So what would you do at this point?
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Zer egingo zenukete une horretan?
01:40
What would you do?
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Zer egingo zenukete?
01:42
Well, Titus lost complete faith in the legal system,
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Titusek konfidantza galdu zuen sistema juridikoan,
01:46
and yet he got an idea.
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baina ideia bat izan zuen.
01:48
He called up the local newspaper,
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Herriko egunkariarekin jarri zen harremanetan,
01:50
he got the interest of an investigative journalist,
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kazetari ikertzaile baten interesa piztu zuen,
01:53
and that journalist actually found the real rapist,
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eta kazetariak, benetako bortxatzailea aurkitu zuen
01:58
a man who ultimately confessed to this rape,
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bortxaketa onartu zuen gizon bat,
02:01
a man who was thought to have committed 50 rapes
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inguru hartan 50 bortxaketa egin izana leporatzen zitzaion gizon bat,
02:05
in that area,
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02:06
and when this information was given to the judge,
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eta informazioa epaileari eman zitzaionean
02:09
the judge set Titus free.
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epaileak Titus aske utzi zuen.
02:12
And really, that's where this case should have ended.
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Eta, zinez hor amaitu behar zen kasua.
02:16
It should have been over.
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Amaitu egin behar zen.
02:17
Titus should have thought of this as a horrible year,
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Titusentzat urte txar bat izan behar zen,
02:20
a year of accusation and trial, but over.
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salaketa eta epaiketa urtea, baina amaitua.
02:24
It didn't end that way.
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Ez zen horrela amaitu.
02:26
Titus was so bitter.
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Titus etsita zegoen.
02:28
He'd lost his job. He couldn't get it back.
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Bere lana galdu zuen. Ezin zuen berreskuratu
02:31
He lost his fiancée.
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Emaztegaia galdu zuen.
02:33
She couldn't put up with his persistent anger.
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Bere etengabeko haserrea jasanezina zen.
02:36
He lost his entire savings,
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Bere aurrezkiak galdu zituen,
02:38
and so he decided to file a lawsuit
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eta salaketa bat jartzea erabaki zuen
02:41
against the police and others whom he felt
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polizia eta beste batzuen aurka
02:43
were responsible for his suffering.
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bere sufrimenduaren sortzaileen aurka.
02:45
And that's when I really started working on this case,
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Eta orduan hasi nintzen kasu honetan lanean
02:50
trying to figure out
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zera asmatu nahian,
02:52
how did that victim go from
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nola iritsi zen biktima
02:54
"That one's the closest"
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"hau da antzekoena" esatetik
02:56
to "I'm absolutely positive that's the guy."
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"ziur nago hau dela" esatera.
03:00
Well, Titus was consumed with his civil case.
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Titus indar gabe zegoen kasuagatik.
03:04
He spent every waking moment thinking about it,
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Uneoro hortan pentsatzen zegoen,
03:07
and just days before he was to have his day in court,
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eta epaiketa baino egun batzuk lehenago,
03:11
he woke up in the morning,
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goizean esnatu,
03:13
doubled over in pain,
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minez tolestu,
03:15
and died of a stress-related heart attack.
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eta estresak sortutako bihotzekoagatik hil zen.
03:18
He was 35 years old.
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35 urte zituen.
03:21
So I was asked to work on Titus' case
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Titusen kasuan lan egiteko eskatu zidaten.
03:26
because I'm a psychological scientist.
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Psikologo zientifikoa naizelako.
03:28
I study memory. I've studied memory for decades.
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Oroimena aztertu dut hamarkadetan zehar.
03:32
And if I meet somebody on an airplane --
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Eta norbait ezagutzen badut hegazkinean
03:35
this happened on the way over to Scotland --
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- Eskoziara bidean gertatu zitzaidan-
03:37
if I meet somebody on an airplane,
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Norbait ezagutzen badut hegazkinean,
03:39
and we ask each other, "What do you do? What do you do?"
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eta elkarri galdetu "zer egiten duzu?"
03:42
and I say "I study memory,"
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eta "oroimena aztertu" badiot,
03:44
they usually want to tell me how they have trouble remembering names,
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izenak gogoratzeko zailtasunez hitz egingo didate,
03:47
or they've got a relative who's got Alzheimer's
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edo Alzheimerra duen kide batez,
03:50
or some kind of memory problem,
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edo oroimen arazoren batez,
03:52
but I have to tell them
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baina esan behar diet
03:54
I don't study when people forget.
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ez dudala aztertzen ahazte prozesua.
03:58
I study the opposite: when they remember,
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Aurkakoa ikasten dut: gogoratzea,
04:01
when they remember things that didn't happen
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gertatu ez diren gauzak gogoratzea
04:03
or remember things that were different
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edo gauzak desberdin gogoratzea
04:05
from the way they really were.
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benetan izan zenarekin alderatuz.
04:07
I study false memories.
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Oroimen faltsuak aztertzen ditut.
04:12
Unhappily, Steve Titus is not the only person
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Zoritxarrez, Steve Titus ez da bakarra
04:16
to be convicted based on somebody's false memory.
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oroimen faltsu batengatik kondenatua izan dena
04:21
In one project in the United States,
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EEBBetako proiektu batean
04:24
information has been gathered
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informazioa bildu da
04:26
on 300 innocent people,
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300 errugaberen inguruan,
04:30
300 defendants who were convicted of crimes they didn't do.
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egin gabeko delituengatik kondenatutakoak.
04:34
They spent 10, 20, 30 years in prison for these crimes,
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10,20 eta 30 urte pasa zituzten kartzelan,
04:39
and now DNA testing has proven
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eta orain DNA frogek frogatu dute
04:42
that they are actually innocent.
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errugabeak direla.
04:45
And when those cases have been analyzed,
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Eta kasu hauek aztertuak izan direnean,
04:47
three quarters of them
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hiru laurdenak
04:49
are due to faulty memory, faulty eyewitness memory.
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oroimen faltsuengatik izan dira.
04:55
Well, why?
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Eta zergatik?
04:56
Like the jurors who convicted those innocent people
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Errugabe hauek kondenatu zituzten epaimahiak
05:00
and the jurors who convicted Titus,
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eta Titus kondenatu zuen epaimahiak bezala,
05:02
many people believe that memory
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askok uste dute oroimena
05:04
works like a recording device.
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grabagailu bat bezalakoa dela.
05:06
You just record the information,
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Informazioa gordetzen duena,
05:08
then you call it up and play it back
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gero berreskuratu eta berrerabiltzeko
05:11
when you want to answer questions or identify images.
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galderak erantzun edo irudiak identifikatu nahi direnean.
05:14
But decades of work in psychology
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Baina psikologian hamarkadetan egindako lanek
05:16
has shown that this just isn't true.
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hau ez dela horrela erakutsi dute.
05:20
Our memories are constructive.
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Gure oroitzapenak eraikitzaileak dira.
05:22
They're reconstructive.
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Berreraikitzaileak.
05:24
Memory works a little bit more like a Wikipedia page:
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Oroimenak Wikipediaren orri baten antzera lan egiten du:
05:27
You can go in there and change it, but so can other people.
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Gauzak aldatu ditzakezu, baina baita besteek ere.
05:32
I first started studying this constructive memory process
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Oroitzapen eraikitzaile hauek lehen adiz aztertzen
05:37
in the 1970s.
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70.hamarkadan hasi nintzen.
05:40
I did my experiments that involved showing people
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Esperimentuetan jendeari simulatutako delitu eta istripuak erakusten zitzaizkien
05:44
simulated crimes and accidents
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05:47
and asking them questions about what they remember.
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eta gogoratzen zutenaz galdetzen zitzaien.
05:50
In one study, we showed people a simulated accident
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Behin, simulatutako istripu bat erakutsi genuen
05:54
and we asked people,
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eta zera galdetu,
05:56
how fast were the cars going when they hit each other?
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ze abiadura zeramaten autoek talka egitean?
05:58
And we asked other people,
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Beste batzuei zera galdetu genien
06:00
how fast were the cars going when they smashed into each other?
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ze abiadura zeramaten autoek elkar jo zutenean?
06:04
And if we asked the leading "smashed" question,
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eta galderan "jo" erabili genuenean,
06:07
the witnesses told us the cars were going faster,
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lekukoek autoa azkarrago zihoala esan zuten,
06:10
and moreover, that leading "smashed" question
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eta orohar galderan "jo" hitza erabiltzeak
06:14
caused people to be more likely to tell us
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jendeak probabilitate handiagoz zera esatea eragin zuen,
06:17
that they saw broken glass in the accident scene
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istripuaren tokian kristal apurtuak ikusi zituela
06:20
when there wasn't any broken glass at all.
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kristal apurturik ez zegoenean.
06:24
In another study, we showed a simulated accident
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Beste batean, simulatutako istripu bat erakutsi genuen
06:27
where a car went through an intersection with a stop sign,
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non kotxe batek "stop" seinale bat pasatzen zuen
06:30
and if we asked a question that insinuated it was a yield sign,
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eta "eman bidea" seinalea zela iradokiz galdera bat egitean,
06:35
many witnesses told us they remember seeing a yield sign
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lekuko askok bidegurutzean "eman bidea" seinalea gogoratzen zutela esaten zuten
06:39
at the intersection, not a stop sign.
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eta ez "stop" seinalea.
06:43
And you might be thinking, well, you know,
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Eta pentsa dezakezu, tira, badakizu,
06:45
these are filmed events,
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hauek grabaketak dira,
06:46
they are not particularly stressful.
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eta ez dira bereziki estresagarriak.
06:48
Would the same kind of mistakes be made
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Akats berdinak egingo lirateke
06:51
with a really stressful event?
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benetan estresagarriak diren egoeretan?
06:54
In a study we published just a few months ago,
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Duela gutxi argitaratutako ikerketa batean
06:57
we have an answer to this question,
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galdera horri erantzun bat ematen diogu,
06:59
because what was unusual about this study
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ikerketa honen bereizgarri bat
07:02
is we arranged for people to have a very stressful experience.
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jendea egoera estresagarrian jartzea delako.
07:07
The subjects in this study
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Bertan, partaideak
07:10
were members of the U.S. military
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EEBBetako militarrak ziren
07:12
who were undergoing a harrowing training exercise
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entrenamendu beldurgarrian zeudenak
07:17
to teach them what it's going to be like for them
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egoera zailetara ohitzen joateko
07:19
if they are ever captured as prisoners of war.
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gerran preso eramaten bazituzten.
07:23
And as part of this training exercise,
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Eta entrenamendu honen zati gisa,
07:26
these soldiers are interrogated in an aggressive,
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soldaduak agresiboki galdekatzen dituzte
07:29
hostile, physically abusive fashion for 30 minutes
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30 minutuz fisikoki erasotuz
07:34
and later on they have to try to identify
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eta gero identifikatzen saiatu behar dira
07:37
the person who conducted that interrogation.
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nork galdekatu zituen.
07:40
And when we feed them suggestive information
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Eta informazio iradokitzailea eskaintzen diegunean
07:44
that insinuates it's a different person,
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pertsona desberdin bat dela iradokiz,
07:47
many of them misidentify their interrogator,
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askok txarto identifikatzen dute galdetzailea,
07:51
often identifying someone who doesn't even remotely
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askotan, identifikatutakoak ez du
07:55
resemble the real interrogator.
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benetako galdetzailearen antzik ere.
07:58
And so what these studies are showing
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Ikerketa hauek erakusten dutena zera da,
08:00
is that when you feed people misinformation
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jendeari iradokizunak egiterakoan
08:04
about some experience that they may have had,
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jasan duten esperientzia baten inguruan,
08:07
you can distort or contaminate or change their memory.
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berain oroitzapena aldatu daitekeela.
08:13
Well out there in the real world,
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Benetako munduan,
08:15
misinformation is everywhere.
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informazio eza nonahi dago.
08:18
We get misinformation
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Desinformazioa dago
08:19
not only if we're questioned in a leading way,
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ez bakarrik galdetuak bagara,
08:22
but if we talk to other witnesses
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baita lekukoekin hitz egiterakoan ere
08:25
who might consciously or inadvertently feed us
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nortzuek modu desegokian eskaini diezaguketen
08:28
some erroneous information,
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informazio okerra,
08:30
or if we see media coverage about some event we might have experienced,
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edo bizitako egoera baten berria entzutean
08:35
all of these provide the opportunity
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eta guzti honek oroimenaren kutsaketa ahalbidetzen du.
08:37
for this kind of contamination of our memory.
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08:42
In the 1990s, we began to see
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1990an, zera ikusten hasi ginen,
08:46
an even more extreme kind of memory problem.
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oraindik larriagoa den oroimen arazoa.
08:50
Some patients were going into therapy with one problem --
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Pazienteak arazo batekin joaten ziren terapiara--
08:53
maybe they had depression, an eating disorder --
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agian depresioa, elikadura nahastea--
08:56
and they were coming out of therapy
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eta terapiatik ateratzen zirenean
08:59
with a different problem.
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arazo desberdin bat zuten.
09:02
Extreme memories for horrific brutalizations,
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Basakeria beldurgarrien oroimenak,
09:05
sometimes in satanic rituals,
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batzuetan erritual satanikoenak,
09:07
sometimes involving really bizarre and unusual elements.
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batzuetan elementu arraroei loturikoak.
09:12
One woman came out of psychotherapy
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Emakume batek psikoterapia amaitzean
09:15
believing that she'd endured years
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zera sinisten zuen, urteetan zehar
09:17
of ritualistic abuse, where she was forced into a pregnancy
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eraso zeremonialak jasan izan zituela, haurdunaldira eraman zutenak
09:21
and that the baby was cut from her belly.
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eta haurra bere tripatik moztu zutela.
09:24
But there were no physical scars
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Baina ez zeukan orbain fisikorik
09:26
or any kind of physical evidence
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ez inolako froga fisikorik
09:28
that could have supported her story.
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bere istorioa ziurtatuko zuenik.
09:31
And when I began looking into these cases,
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Eta kasu hauek aztertzen hasi nintzenean,
09:34
I was wondering,
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nire buruari galdetzen nion,
09:35
where do these bizarre memories come from?
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nondik datoz oroitzapen arraro hauek?
09:38
And what I found is that most of these situations
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Eta zera aurkitu nuen, kasu gehienetan
09:42
involved some particular form of psychotherapy.
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psikoterapia motaren batean gertatzen zela hori.
09:47
And so I asked,
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Eta beraz, galdetu nuen,
09:49
were some of the things going on in this psychotherapy --
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psikoterapia honen aspekturen bat--
09:52
like the imagination exercises
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imajinazio ariketak esaterako
09:55
or dream interpretation,
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edo ametsen interpretazioa,
09:57
or in some cases hypnosis,
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edo kasu batzuetan hipnosia,
10:00
or in some cases exposure to false information --
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edo informazio faltsuaren aurkezpena--
10:03
were these leading these patients
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ote zen pazienteak bultzatzen zituena
10:06
to develop these very bizarre,
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oso arraroak ziren
10:09
unlikely memories?
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oroitzapenak garatzera.
10:12
And I designed some experiments
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Beraz, esperimentu batzuk diseinatu nituen
10:14
to try to study the processes that were being used
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prozesu hauek aztertzen saiatzeko
10:19
in this psychotherapy so I could study
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psikoterapia horietan, aztertu nahian
10:22
the development of these very rich false memories.
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oroimen faltsuen garapena.
10:26
In one of the first studies we did,
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Egindako hasierako ikerketa batean,
10:28
we used suggestion,
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sugestioa erabili genuen,
10:30
a method inspired by the psychotherapy we saw in these cases,
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kasu horietako psikoterapiako metodo bat,
10:34
we used this kind of suggestion
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2110
sugestio mota bat erabili genuen
10:36
and planted a false memory
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1852
eta oroitzapen faltsu bat txertatu
10:38
that when you were a kid, five or six years old,
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non umea zinenean, 5-6 urte,
10:41
you were lost in a shopping mall.
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zentro komertzial batean galdu zinen.
10:44
You were frightened. You were crying.
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2500
Beldurtuta zeunden. Negarrez.
10:46
You were ultimately rescued by an elderly person
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Azkenean adineko batek salbatu zintuen
10:49
and reunited with the family.
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eta zure familiarengana eraman.
10:51
And we succeeded in planting this memory
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Eta oroitzapen hau txertatzea lortu genuen
10:53
in the minds of about a quarter of our subjects.
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partaideen laurden batean.
10:57
And you might be thinking, well,
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2005
Eta pentsa dezakezu, tira,
10:59
that's not particularly stressful.
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2346
hori ez da bereziki estresagarria.
11:02
But we and other investigators have planted
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Guk eta beste ikertzaile batzuk oroitzapen faltsuak txertatu ditugu
11:05
rich false memories of things that were
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ezohikoagoak eta estresagarriagoak zirenak.
11:08
much more unusual and much more stressful.
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668221
2915
11:11
So in a study done in Tennessee,
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2539
Tennesseen egindako ikerketa batean,
11:13
researchers planted the false memory
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2416
ikertzaileek oroitzapen faltsu bat txertatu zuten
11:16
that when you were a kid, you nearly drowned
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2574
non, haurra zinenean ia ito egin zinen
11:18
and had to be rescued by a life guard.
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2507
eta sorosle batek erreskatatu behar izan zintuen.
11:21
And in a study done in Canada,
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2303
Eta Kanadan egindako ikerketa batean,
11:23
researchers planted the false memory
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2524
ikertzaileek oroitzapen faltsua txertatu zuten
11:25
that when you were a kid,
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non haurra zinenean
11:27
something as awful as being attacked by a vicious animal
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3730
animalia basati batek erasotzea bezalako zerbait
11:30
happened to you,
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1382
gertatu zitzaizun,
11:32
succeeding with about half of their subjects.
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eta partehartzaile erdiekin lortu zuten.
11:35
And in a study done in Italy,
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2352
Eta Italian egindako ikerketa batean,
11:38
researchers planted the false memory,
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2658
ikertzaileek oroitzapen faltsua txertatu zuten
11:40
when you were a kid, you witnessed demonic possession.
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5212
non, haurra zinenean deabrutze bat ikusi zenuen.
11:45
I do want to add that it might seem
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Gehitu nahi dut, eman dezakeela
11:48
like we are traumatizing these experimental subjects
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partehartzaile esperimentalak traumatizatzen ditugula
11:51
in the name of science,
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zientziaren izenean,
11:53
but our studies have gone through thorough evaluation
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baina gure ikerketak ebaluatuak izan dira
11:58
by research ethics boards
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718167
1975
etika batzordeengandik
12:00
that have made the decision
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eta erabaki dute
12:02
that the temporary discomfort that some
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sortu dezaketen egonezin iragankorra,
12:05
of these subjects might experience in these studies
239
725557
3084
partehartzaile esperimentalek sufritu dezaketena,
12:08
is outweighed by the importance of this problem
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3900
konpentsatu egiten dela arazoaren garrantziarekin,
12:12
for understanding memory processes
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3107
oroimen prozesuak ulertzea
12:15
and the abuse of memory that is going on
242
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3346
eta munduko leku batzuetan egiten diren gehiegikeriak aztertzea.
12:18
in some places in the world.
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3293
12:22
Well, to my surprise,
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Nire harridurarako,
12:25
when I published this work and began to speak out
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lan hau argitaratu eta hitz egiten hastean
12:28
against this particular brand of psychotherapy,
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psikoterapia mota horien aurka,
12:32
it created some pretty bad problems for me:
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3980
arazo batzuk sortu zitzaizkidan:
12:36
hostilities, primarily from the repressed memory therapists,
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4901
etsaitasunak, batez ere oroimen erreprimituen terapeutengandik
12:41
who felt under attack,
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1676
erasotuak sentitu zirenak,
12:43
and by the patients whom they had influenced.
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eta tratatuak izan ziren pazienteengandik.
12:46
I had sometimes armed guards at speeches
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Batzuetan zaindariak eraman behar izan nituen hitzaldietara
12:49
that I was invited to give,
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1905
non gonbidatua izan nintzen,
12:51
people trying to drum up letter-writing campaigns to get me fired.
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jendea ni kaleratzeko kanpaina egiten.
12:55
But probably the worst
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775793
1981
Baina segurutik, okerrena zera izan zen,
12:57
was I suspected that a woman
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2767
susmoa nuela emakume bat
13:00
was innocent of abuse
256
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2424
erasoen errugabea zela,
13:02
that was being claimed by her grown daughter.
257
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2836
eta bere alabak salatu egin zuela.
13:05
She accused her mother of sexual abuse
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Amari eraso sexualak egitea leporatzen zion
13:09
based on a repressed memory.
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1859
erreprimitutako oroitzapenetan oinarrituta.
13:11
And this accusing daughter had actually allowed her story
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2883
Eta alaba salatari hark baimendu egin zuen istorioa
13:13
to be filmed and presented in public places.
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filmatua eta publikoki argitaratua izatea.
13:17
I was suspicious of this story,
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2509
Zalantzak neuzkan istorioaren inguruan,
13:19
and so I started to investigate,
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2300
eta ikertzen hasi nintzen,
13:22
and eventually found information that convinced me
264
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eta informazioa lortu nuen konbentzitu ninduena
13:26
that this mother was innocent.
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ama errugabea zela.
13:28
I published an exposé on the case,
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Kasuaren inguruan argitaratu nuen,
13:31
and a little while later, the accusing daughter
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eta geroago, alaba salatzaileak
13:35
filed a lawsuit.
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1521
auzitara eraman ninduen.
13:36
Even though I'd never mentioned her name,
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Bere izena inoiz aipatu ez nuen arren,
13:39
she sued me for defamation and invasion of privacy.
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4362
difamazio eta pribatutasun inbasioagatik salatu ninduen.
13:43
And I went through nearly five years
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Eta 5 urtean zehar
13:46
of dealing with this messy, unpleasant litigation,
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6552
auzi desatseginetan ibili nintzen,
13:52
but finally, finally, it was over and I could really
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baina azkenean amaitu zen, eta
13:56
get back to my work.
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2424
lanera itzuli ahal izan nuen.
13:58
In the process, however, I became part
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Hala ere, bidean, parte izan nintzen
14:01
of a disturbing trend in America
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2654
EEBBetako joera kezkagarri batena
14:04
where scientists are being sued
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non zientzialariak salatuak diren
14:06
for simply speaking out on matters of great public controversy.
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eztabaida publikoetan parte hartzeagatik.
14:10
When I got back to my work, I asked this question:
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3358
Lanera itzuli nintzenean, galdetu nuen:
14:14
if I plant a false memory in your mind,
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2398
oroitzapen faltsu bat txertatuz gero,
14:16
does it have repercussions?
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856592
1844
ondorioak izango al ditu?
14:18
Does it affect your later thoughts,
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1959
Zure geroko pentsamenduetan eragingo al du?
14:20
your later behaviors?
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2101
eta zure geroko jokabideetan?
14:22
Our first study planted a false memory
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2027
Lehen ikerketan oroitzapen bat txertatu genuen
14:24
that you got sick as a child eating certain foods:
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3326
non haurra zinenean elikagai batek gaixotu zintuen:
14:27
hard-boiled eggs, dill pickles, strawberry ice cream.
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2999
arrautza egosiak, pepinoak, marrubizko izozkia.
14:30
And we found that once we planted this false memory,
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3190
Aurkitu genuen, behin oroitzapena txertatuta
14:34
people didn't want to eat the foods as much
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2451
jendeak ez zuela hori hainbeste jan nahi
14:36
at an outdoor picnic.
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kanpoko piknik batean.
14:38
The false memories aren't necessarily bad or unpleasant.
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3873
Oroitzapen faltsuak ez dute desatseginak izan beharrik.
14:42
If we planted a warm, fuzzy memory
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Oroitzapen atsegin bat txertatuz gero
14:44
involving a healthy food like asparagus,
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zainzuria bezalako elikagai osasuntsu baten inguruan
14:48
we could get people to want to eat asparagus more.
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jendeak zainzuri gehiago jatea lortuko genuke.
14:51
And so what these studies are showing
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Ikerketa hauek erakusten dutena da
14:53
is that you can plant false memories
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2115
oroitzapen faltsuak txertatu daitezkeela
14:55
and they have repercussions
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1413
eta ondorio izan ditzaketela
14:57
that affect behavior long after the memories take hold.
297
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5085
jokabidean, epe luzera.
15:02
Well, along with this ability
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2424
Gaitasun honekin batera
15:04
to plant memories and control behavior
299
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2923
oroitzapenak txertatzea eta jokabidea kontrolatzea,
15:07
obviously come some important ethical issues,
300
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4181
kontu etiko garrantzitsuak daude,
15:11
like, when should we use this mind technology?
301
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esaterako, noiz erabili behar dira teknika hauek?
15:15
And should we ever ban its use?
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edo, debekatu egin behar dira?
15:18
Therapists can't ethically plant false memories
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2783
Terapeutek ezin dute etikoki oroitzapenik txertatu
15:21
in the mind of their patients
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pazienteen gogamenean
15:23
even if it would help the patient,
305
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2564
laguntzeko bada ere,
15:25
but there's nothing to stop a parent
306
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1622
baina ezerk ez dio guraso bati galerazten
15:27
from trying this out on their overweight or obese teenager.
307
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4449
haur obesoekin egiten saiatzeko.
15:31
And when I suggested this publicly,
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2605
Eta hau publikoki iradoki nuenean,
15:34
it created an outcry again.
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3346
kexak sortu ziren berriz.
15:37
"There she goes. She's advocating that parents lie to their children."
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4033
"Hor doa. Gurasoek haurrei gezurrak esatea bultzatzen"
15:41
Hello, Santa Claus. (Laughter)
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2245
Kaixo, Santa Claus. (Barreak)
15:43
I mean, another way to think about this is,
312
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9497
Hau ikusteko eduki dezakegun beste modu bat zera da,
15:53
which would you rather have,
313
953461
2033
zer nahiago duzu, haur obesoa, diabetesarekin, biziraupen laburra,
15:55
a kid with obesity, diabetes, shortened lifespan,
314
955494
3029
15:58
all the things that go with it,
315
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1532
honek guztiak dakarrena,
16:00
or a kid with one little extra bit of false memory?
316
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3016
ala oroitzapen faltsu txiki bat duen haurra?
16:03
I know what I would choose for a kid of mine.
317
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3391
Badakit zer aukeratuko nukeen nire haurrarentzat.
16:06
But maybe my work has made me different from most people.
318
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3977
Beharbada nire lanak gehiengotik desberdindu egin nau.
16:10
Most people cherish their memories,
319
970439
2079
Gehienek oroitzapenak maite dituzte,
16:12
know that they represent their identity,
320
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2154
euren identitatea errepresentatzen dute,
16:14
who they are, where they came from.
321
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2025
nortzuk diren, nondik datozen.
16:16
And I appreciate that. I feel that way too.
322
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2858
Eta hori baloratzen dut. Nik ere horrela sentitzen dut.
16:19
But I know from my work
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2205
Baina nire lanagatik dakit
16:21
how much fiction is already in there.
324
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4481
zenbat fikzio dagoen horietan.
16:26
If I've learned anything from these decades
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2732
Hamarkada hauetan zerbait ikasi badut
16:28
of working on these problems, it's this:
326
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2410
arazo horiekin lanean, zera da:
16:31
just because somebody tells you something
327
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2211
norbaitek zerbait esateak soilik
16:33
and they say it with confidence,
328
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1575
eta konfidantzarekin esateak,
16:35
just because they say it with lots of detail,
329
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2680
zehaztasun osoz kontatu arren,
16:37
just because they express emotion when they say it,
330
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2759
kontatzerakoan emozioak adierazi arren,
16:40
it doesn't mean that it really happened.
331
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ez du esan nahi gertatu zenik.
16:43
We can't reliably distinguish true memories from false memories.
332
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3865
Ezin dira oroitzapen faltsua eta benetakoa guztiz bereiztu
16:47
We need independent corroboration.
333
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3548
Baieztapen independienteak behar ditugu.
16:51
Such a discovery has made me more tolerant
334
1011223
3090
Aurkikuntza hauek toleranteagoa egin naute
16:54
of the everyday memory mistakes
335
1014313
2139
lagun eta familiakoek egindako ohiko oroimen akatsekiko.
16:56
that my friends and family members make.
336
1016452
2914
16:59
Such a discovery might have saved Steve Titus,
337
1019366
4534
Aurkikuntza hauek Steve Titus salba zezaketen
17:03
the man whose whole future was snatched away
338
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3576
bere etorkizuna kendu zioten gizona
17:07
by a false memory.
339
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2238
oroitzapen faltsu bategatik.
17:09
But meanwhile, we should all keep in mind,
340
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2816
Bitartean jakin beharko genuke,
17:12
we'd do well to,
341
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1636
ondo egingo genuke,
17:14
that memory, like liberty,
342
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3871
oroimena, askatasuna bezala,
17:18
is a fragile thing.
343
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3694
gauza hauskorra dela.
17:21
Thank you. Thank you.
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2938
Eskerrik asko. Eskerrik asko.
17:24
Thank you. (Applause)
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2728
Eskerrik asko. (Txaloak)
17:27
Thanks very much. (Applause)
346
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3719
Mila esker. (Txaloak)
Webgune honi buruz

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