Summary

Fejl som et middel til at reducere Impulsive Food valg

Published: June 05, 2016
doi:

Summary

Giving in to temptation of tasty food may result in long-term overweight problems. This protocol describes how to reduce imprudent preference for edible commodities during hypothetical intertemporal choices in women by associating them with errors.

Abstract

Nowadays, the increasing incidence of eating disorders due to poor self-control has given rise to increased obesity and other chronic weight problems, and ultimately, to reduced life expectancy. The capacity to refrain from automatic responses is usually high in situations in which making errors is highly likely. The protocol described here aims at reducing imprudent preference in women during hypothetical intertemporal choices about appetitive food by associating it with errors. First, participants undergo an error task where two different edible stimuli are associated with two different error likelihoods (high and low). Second, they make intertemporal choices about the two edible stimuli, separately. As a result, this method decreases the discount rate for future amounts of the edible reward that cued higher error likelihood, selectively. This effect is under the influence of the self-reported hunger level. The present protocol demonstrates that errors, well known as motivationally salient events, can induce the recruitment of cognitive control, thus being ultimately useful in reducing impatient choices for edible commodities.

Introduction

I dag, er det afgørende at hjælpe folk står stigningen af spiseforstyrrelser 1-4. Disse lidelser afspejler en overvurdering af incitamentet motivation forbundet med appetitive mad, der inducerer enkeltpersoner til at søge og forbruge det så hurtigt som muligt (dette er blevet vist især med søde højt fedtindhold fødevarer 5-6). Dette sker på bekostning af de fremtidige ydelser, der kan resultere fra at være på en diæt for et stykke tid, men som er nødvendig 7-8 evnen til at udøve spise kontrol. Faktisk har folk, der viser disse unormale adfærd øget opmærksomhedsgraden bias i retning af spiselige stikord 9-10 og erfaring forbedret incitament værdi for primære belønninger 11. Selv bare at kigge på appetitvækkende fødevarer kan cue ønsket om indtager fødevaren straks, både hos personer med spiseforstyrrelser og i den normale befolkning 12-13. For at afstå fra øjeblikkelig tilfredsstillelse og ikke afkald på langsigtede outcomig (fx tabe efter et par måneders kost), man skal udvise stor selvkontrollerende og modstå den medfødte, evolutionært besluttet impuls til at give i fristelse og forbruge det samme. Udøvelse selvkontrol, et begreb, der er indbyrdes til begrebet kognitiv kontrol inden for den Neuroscience, betyder, at man er i stand til at overvinde medfødte impulser til videre behandling og eventuelt gennemførelse af andre, mere passende adfærd 14.

Hvordan enkeltpersoner engagere sig i selvkontrol strategier? Forskning har fremhævet i årenes løb, at kapaciteten til at afstå fra automatiske reaktioner forstærkes i fejl-fuld sammenhænge 15. Fejl er godt betragtes som meget ophidsende og afskrækningsmiddel begivenheder, der, når stødt, fremkalder kompenserende reaktioner 16. Konkret de cue svigt / tab i både ydeevne og anvendelighed, og dermed signalere, at man er nødt til at justere niveauet af kontrol over nuværende og fOMMENDE adfærd i overensstemmelse hermed 17. Desuden kan fejl cue afskrækningsmiddel læring, som en advarsel måde at flygte fra fejlbehæftede, utilpasset adfærd, hvilket har fået gennemførelsen af optimale valg reaktioner 18-21.

Den nuværende protokol viser, hvordan sammenhængen mellem velsmagende fødevarer og fejl kan signalere, at engagere sig i en bestemt adfærd vil føre til en pris (dvs. belønning tab), og dermed fremme gennemførelsen af kompenserende selvkontrol strategier, og derved reducere impulsive mad valg 20,22. I den foreliggende protokol tilpasset fra 23, er deltagerne foreløbigt bedt om at selvrapportering deres sult niveau på tidspunktet for eksperimentet og at klassificere seks forskellige fødevarer. Baseret på de ratings, er to fødevarer med tilsvarende incitament for hver emne valgt for den efterfølgende opgave. Derefter deltagerne udføre en fejl opgave (se reference 24), hvor de to tidligere valgte mad detems cue forskellige fejlrater (høje og lave) forbundet med ydeevne: Fejlen Opgaven er programmeret således, at i et forsøg tilstand, cued af en fødevare, deltagerne lave et lille antal fejl, og i den anden trial tilstand, cued af den anden mad, de gør en meget større antal fejl. Bagefter deltagernes intertemporal valg for hver af de to primære belønninger måles (tilpasset fra henvisning 25). Evnen til at søge større, men forsinkede forstærkninger i stedet for tidligere tilfredsstillelse, som er afgørende, når de står fristende fødevarer og samtidig være på en diæt, der faktisk skarpt fanget af intertemporal valg paradigmer 26. Jo længere tid man nødt til at vente på en god at blive modtaget og forbrugt, er mere subjektive vurdering af dette potentiale belønning svækket (dvs. den såkaldte tidsmæssig diskontering fænomen 27-34). Dårlige beslutninger (dvs. højere tilbøjelighed til at vælge tætte tilfredsstillelse, nemlig øget tidsmæssigdiskontering til fremtidige gevinster) betragtes som et centralt element i impulsivitet 35 og en milepæl af talrige lidelser, herunder stofmisbrug og fedme 36-45. Efter at have gennemgået den procedure, der er beskrevet i denne protokol, viser deltagerne reduceret utålmodig valg for stimulus cueing høje fejlprocent, selektivt. Effekten er mere indlysende, når sult niveau rapporteret af emnerne er lav 23. Det sker, fordi sult påvirker den umiddelbare vurdering af fødeemner 46-49 ved at øge den motiverende værdi af primære belønninger og til gengæld diskontoen af fremtidige mængder af disse belønninger 7,50-52.

Fordelen ved denne metode først ligger i dens let anvendelighed. Fejlen træning forud for intertemporale beslutningsprocesser opgaver er næsten helt ubesværet, hvilket gør det muligt at være ansat i forskellige kliniske omgivelser. For det andet, hvilken fremgangsmåde frembringer den ønskede virkning med hypotetiske spiselige varer,uden behov for at bruge rigtige fødevarer. For det tredje, deltagerne var hovedsageligt uvidende om maden-fejl forening, hvilket gør den efterfølgende effekt på fødevarer præferencer ægte, som kan påvirke beslutninger fødevarer pålideligt i det virkelige liv så godt. Endelig testet i undersøgelsen 23 deltagere var alle unge kvinder, men der er god grund til at spekulere i, at effekten af fødevarer-fejl parring på intertemporale beslutninger ville være det samme på unge mænd også, især fordi emner i den foreliggende undersøgelse var uvidende om den tilsigtede virkning.

Protocol

Etik erklæring: Alle procedurer, der er beskrevet i denne protokol blev udviklet og testet efter etisk godkendelse fra den etiske komité for Psykologi Institut for Bologna Universitet (se også Helsinki-deklarationen 23,53). 1. Deltagere Vælg et udsnit af unge raske voksne hunner. Rekrutter deltagere, der ikke på en diæt, der ikke tager psykoaktive stoffer, fri af nuværende eller tidligere psykiatrisk eller neurologisk sygdom som bestemt af historien, og …

Representative Results

Repræsentative resultater fra anvendelse af protokollen beskrevet ovenfor er rapporteret her. error opgave Gyldighed Fejl opgaven er bestemt af de følgende resultater. Med hensyn til andelen af ​​fejl begået af deltagere, viste de en betydeligt højere antal fejl i HE end i LE tilstand, en signifikant højere antal fejl under Stop forsøg end i Go forsøg og …

Discussion

Denne artikel beskriver i detaljer en roman protokol til formål at reducere impulsiv mad valg i raske unge voksne kvinder. Kritiske trin i denne protokol omfatter prøveudtagning deltagere fra den sunde kvindelige befolkning, indsamle selvrapportering sult niveau på tidspunktet for eksperimentet, vælge to fødevarer med tilsvarende incitament værdi for hvert emne, indsendelse deltagerne en fejl opgave, hvor hver af to forskellige fejl sandsynligheder (høje og lave, tilfældigt afbrudt tværs forsøg) er forbundet m…

Divulgations

The authors have nothing to disclose.

Acknowledgements

Dette arbejde blev støttet af en Programmi di Ricerca Scientifica di Rilevante Interesse Nazionale (PRIN) bevilling fra Ministero Istruzione Università e Ricerca (PRIN 2010, protokol nummer: 2010XPMFW4_009) udstedt til BNP. Vi er også taknemmelige for Caterina Bertini og Raffaella Marino for korrekturlæsning af manuskriptet og udfører i videoen.

Materials

E-Prime PST Stimulus Delivery Software
Statistica Statsoft Statistical Software

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Sellitto, M., di Pellegrino, G. Errors as a Means of Reducing Impulsive Food Choice. J. Vis. Exp. (112), e53283, doi:10.3791/53283 (2016).

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