Experimental Studies of Majority Influences in Financial Markets.

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Andersson, Maria,1977Gothenburg University,Göteborgs universitet,Psykologiska institutionen,Department of Psychology (författare)

Experimental Studies of Majority Influences in Financial Markets.

Artikel/kapitelEngelska2008

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2008

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LIBRIS-ID:oai:gup.ub.gu.se/76113
https://gup.ub.gu.se/publication/76113URI

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Språk:engelska

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Herding in financial markets refers to that investors imitate others when making investment decisions. The aim of this research is to investigate factors that would break influences of a majority of others. In one experiment we investigate the impact of the size of a herd (majority vs. minority), accuracy of the herds’ predictions, and attentional focus. Undergraduates serving as participants are asked to predict fictitious stock prices in 50 trials, conditional on information about the current price and predictions made by five fictitious other participants. The prices and the others’ predictions are generated by random sampling. A majority of the others’ predictions is correlated (rs .95), and the predictions made by the majority are either random (uncorrelated with the price, r <.20) or accurate (correlated with the price, range of rs equal to .65 - .85). Participants are instructed to focus their attention on either accuracy or consistency of the others’ predictions. The results showed that a focus on accuracy reduced majority influence, whereas a focus on consistency had no effect. This was true both in the conditions with accurate and inaccurate majorities. An ongoing additional experiment investigates whether an accurate minority has an influence when its predictions have higher predictive validity than the price. The level of accuracy in the predictions made by the minority is either random (uncorrelated with the price, r <.20) or accurate (correlated with the price, rs .95).

Ämnesord och genrebeteckningar

SAMHÄLLSVETENSKAP Psykologi hsv//swe
SOCIAL SCIENCES Psychology hsv//eng
Herding
financial markets
accuracy
social influence processes

Biuppslag (personer, institutioner, konferenser, titlar ...)

Hedesström, Martin,1969Gothenburg University,Göteborgs universitet,Psykologiska institutionen,Department of Psychology(Swepub:gu)xhedte (författare)
Gärling, Tommy,1941Gothenburg University,Göteborgs universitet,Psykologiska institutionen,Department of Psychology(Swepub:gu)xgarto (författare)
Göteborgs universitetPsykologiska institutionen (creator_code:org_t)

Sammanhörande titlar

Ingår i:Paper presented at the 6th Nordic conference on group and social psychology (GRASP), Lund University, Sweden

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https://gup.ub.gu.se/publication/76113

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Av författaren/redakt...: Andersson, Maria ...; Hedesström, Mart ...; Gärling, Tommy, ...

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SAMHÄLLSVETENSKAP: SAMHÄLLSVETENSKA ...; och Psykologi

Artiklar i publikationen: Paper presented ...

Av lärosätet: Göteborgs universitet

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