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[ 2 ] traut-mattausch e. , schulz-hardt s. , greitemeyer t. and frey d. ( 2004 ) , « expectancy confirmation in spite of disconfirming evidence : the case of price increases due to the introduction of the euro » , european journal of social psychology , vol. 34 . , no. 6 , pp. 739-760 .
[ 2 ] traut-mattausch e. , schulz-hardt s. , greitemeyer t. and frey d. expectancy confirmation in spite of disconfirming evidence : the case of price increases due to the introduction of the euro , european journal of social psychology , vol. 34 , no. 6 , 2004 , pp. 739 – 760 .