The psychology behind irrational decisions - Sara Garofalo

2,329,335 views ・ 2016-05-12

TED-Ed


Please double-click on the English subtitles below to play the video.

Prevodilac: Milenka Okuka Lektor: Mile Živković
00:06
Let's say you're on a game show.
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Recimo da učestvujete u kvizu.
00:08
You've already earned $1000 in the first round
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Već ste zaradili 1000 dolara u prvoj rundi,
00:12
when you land on the bonus space.
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kad vas zatekne bonus polje.
00:14
Now, you have a choice.
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Sad imate izbor.
00:16
You can either take a $500 bonus guaranteed
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Možete da uzmete zagarantovani bonus od 500 dolara
00:20
or you can flip a coin.
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ili da bacate novčić.
00:22
If it's heads, you win $1000 bonus.
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Ako bude glava, dobijate bonus od 1000 dolara.
00:25
If it's tails, you get no bonus at all.
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Ako bude pismo, uopšte ne dobijate bonus.
00:29
In the second round, you've earned $2000 when you land on the penalty space.
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U drugoj rundi ste zaradili 2000 dolara kad vas zatekne kazneno polje.
00:34
Now you have another choice.
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Sad imate drugi izbor.
00:36
You can either take a $500 loss,
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Možete da prihvatite gubitak od 500 dolara
00:39
or try your luck at the coin flip.
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ili da okušate sreću bacanjem novčića.
00:42
If it's heads, you lose nothing,
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Ako bude glava, ne gubite ništa,
00:44
but if it's tails, you lose $1000 instead.
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ali, naprotiv, ako bude pismo, gubite 1000 dolara.
00:49
If you're like most people,
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Ako ste poput većine ljudi,
00:50
you probably chose to take the guaranteed bonus in the first round
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verovatno ste izabrali da uzmete zagarantovani bonus u prvoj rundi,
00:54
and flip the coin in the second round.
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a da bacate novčić u drugoj rundi.
00:57
But if you think about it, this makes no sense.
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No, ako razmislite o tome, ovo nema nikakvog smisla.
01:00
The odds and outcomes in both rounds are exactly the same.
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Potpuno su iste šanse i ishodi u obe runde.
01:04
So why does the second round seem much scarier?
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Pa zašto se onda druga runda čini strašnijom?
01:08
The answer lies in a phenomenon known as loss aversion.
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Odgovor leži u pojavi koja se naziva averzijom prema gubitku.
01:13
Under rational economic theory,
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Prema racionalnoj ekonomskoj teoriji
01:15
our decisions should follow a simple mathematical equation
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naše odluke bi trebalo da se vode jednostavnom matematičkom jednačinom
01:18
that weighs the level of risk against the amount at stake.
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koja odmerava nivo rizika naspram iznosa koji je u pitanju.
01:23
But studies have found that for many people,
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Ali istraživanja su otkrila da je za mnoge ljude
01:25
the negative psychological impact we feel from losing something
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negativno psihološko dejstvo koje osećamo zbog gubitka nečega
01:29
is about twice as strong as the positive impact of gaining the same thing.
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otprilike dvostruko jače od pozitivnog dejstva dobijanja iste stvari.
01:34
Loss aversion is one cognitive bias that arises from heuristics,
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Averzija prema gubitku je kognitivna predrasuda proistekla iz heuristike,
01:39
problem-solving approaches based on previous experience and intuition
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pristupa rešavanju problema zasnovanog na prethodnom iskustvu i intuiciji,
01:43
rather than careful analysis.
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a ne na pažljivoj analizi.
01:46
And these mental shortcuts can lead to irrational decisions,
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A ove mentalne prečice mogu da dovedu do iracionalnih odluka,
01:50
not like falling in love
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ne nalik zaljubljivanju
01:51
or bungee jumping off a cliff,
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ili skakanju bandžijem s litice,
01:53
but logical fallacies that can easily be proven wrong.
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već logičkih zabluda koje lako mogu da se opovrgnu.
01:57
Situations involving probability are notoriously bad for applying heuristics.
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Situacije koje se tiču verovatnoće su čuveno loše za primenu heuristike.
02:03
For instance, say you were to roll a die with four green faces and two red faces
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Na primer, recimo da treba da bacate kocku sa četiri zelene i dve crvene strane
02:09
twenty times.
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dvadeset puta.
02:10
You can choose one of the following sequences of rolls,
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Možete da izaberete jedan od sledećih nizova bacanja
02:13
and if it shows up, you'll win $25.
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i ako on dođe, dobijate 25 dolara.
02:17
Which would you pick?
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Koji biste niz odabrali?
02:18
In one study, 65% of the participants who were all college students
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U jednom istraživanju, 65% učesnika koji su svi bili studenti,
02:23
chose sequence B
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izabrali su niz pod B,
02:26
even though A is shorter and contained within B,
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iako je A kraći i sadržan je unutar B niza,
02:29
in other words, more likely.
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drugim rečima, verovatniji je.
02:31
This is what's called a conjunction fallacy.
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Ovo se naziva greškom konjunkcije.
02:35
Here, we expect to see more green rolls,
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Ovde očekujemo da ćemo videti više zelenih bacanja,
02:37
so our brains can trick us into picking the less likely option.
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te naš mozak može da nas obmane da izaberemo manje verovatnu opciju.
02:41
Heuristics are also terrible at dealing with numbers in general.
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Heuristika je takođe očajna uopšteno kod baratanja brojevima.
02:45
In one example, students were split into two groups.
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U jednom primeru, studenti su podeljeni u dve grupe.
02:49
The first group was asked whether Mahatma Gandhi died before or after age 9,
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Prvu grupu su pitali
da li je Mahatma Gandi umro pre ili posle devete godine,
02:54
while the second was asked whether he died before or after age 140.
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dok su drugu grupu pitali da li je umro pre ili posle 140. godine.
03:00
Both numbers were obviously way off,
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Oba broja su očigledno bila daleka,
03:02
but when the students were then asked to guess the actual age at which he died,
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ali kad su studenti potom upitani da pogode tačno u kojoj godini je umro,
03:07
the first group's answers averaged to 50
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odgovori prve grupe su u proseku bili oko broja 50,
03:09
while the second group's averaged to 67.
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dok su u drugoj grupi u proseku bili oko broja 67.
03:13
Even though the clearly wrong information in the initial questions
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Iako bi očigledno pogrešna informacija iz prvog pitanja
03:16
should have been irrelevant,
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trebalo da bude nebitna,
03:18
it still affected the students' estimates.
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ipak je uticala na procene studenata.
03:21
This is an example of the anchoring effect,
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Ovo je primer efekta sidra
03:24
and it's often used in marketing and negotiations
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i često se koristi u marketingu i u pregovorima
03:27
to raise the prices that people are willing to pay.
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kako bi se podigla cena koju su ljudi voljni da plate.
03:31
So, if heuristics lead to all these wrong decisions,
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Pa, ako heuristika vodi do svih tih pogrešnih odluka,
03:34
why do we even have them?
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zašto je uopšte posedujemo?
03:36
Well, because they can be quite effective.
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Pa zato što može da bude prilično efikasna.
03:39
For most of human history,
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Većim delom ljudske istorije
03:41
survival depended on making quick decisions with limited information.
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opstanak je zavisio od donošenja brzih odluka uz ograničene informacije.
03:45
When there's no time to logically analyze all the possibilities,
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Kad nema vremena za logičku analizu svih mogućnosti,
03:49
heuristics can sometimes save our lives.
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heuristika nam ponekad može spasiti život.
03:52
But today's environment requires far more complex decision-making,
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No današnje okruženje zahteva daleko složenije odlučivanje,
03:56
and these decisions are more biased by unconscious factors than we think,
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a te odluke su zbog nesvesnih faktora daleko pristrasnije nego što mislimo,
04:01
affecting everything from health and education
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utiču na sve, od zdravlja i obrazovanja
04:03
to finance and criminal justice.
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do finansija i kriminalne pravde.
04:06
We can't just shut off our brain's heuristics,
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Ne možemo prosto da isključimo heuristiku našeg uma,
04:08
but we can learn to be aware of them.
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ali možemo da naučimo da je budemo svesni.
04:11
When you come to a situation involving numbers,
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Kada se zateknete u situaciji koja podrazumeva brojeve,
04:13
probability,
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verovatnoću
04:14
or multiple details,
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ili višestruke detalje,
04:16
pause for a second
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zastanite na sekund
04:18
and consider that the intuitive answer might not be the right one after all.
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i uzmite u obzir da intuitivni odgovor, naposletku, možda i nije tačan.
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