The '''group attribution error''' is an [[attribution bias]] analogous to the [[fundamental attribution error]] in that it refers to people's tendency to believe either (1) that the characteristics of an individual group member are reflective of the group as a whole, or (2) that a group's decision outcome must reflect the preferences of individual group members, even when external information is available suggesting otherwise.<ref>{{cite journal|last1=Hamill|first1=Ruth|last2=Wilson|first2=Timothy TheD.|last3=Nisbett|first3=Richard fundamentalE.|date=1980|title=Insensitivity attributionto errorsample isbias: similarGeneralizing infrom thatatypical itcases|url=https://deepblue.lib.umich.edu/bitstream/handle/2027.42/92179/InsensitivityToSampleBias.pdf|deadurl=bot: refersunknown|journal=Journal toof thePersonality tendencyand toSocial believePsychology|volume=39|issue=4|pages=578–589|doi=10.1037/0022-3514.39.4.578|archiveurl=https://web.archive.org/web/20160511145714/https://deepblue.lib.umich.edu/bitstream/handle/2027.42/92179/InsensitivityToSampleBias.pdf|archivedate=2016-05-11|df=}}</ref><ref thatname=":0">{{cite anjournal|last1=Allison|first1=Scott individual'sT|last2=Messick|first2=David actionsM|date=1985|title=The aregroup representativeattribution error|journal=Journal of theExperimental individual'sSocial preferencesPsychology|volume=21|issue=6|pages=563–579|doi=10.1016/0022-1031(85)90025-3}}</ref><ref>Mackie, evenDiane whenM.; availableAllison, informationScott suggestsT. that(1987). "Group attribution errors and the actionsillusion wereof causedgroup byattitude outsidechange". ''Journal forcesof Experimental Social Psychology''.</ref>
The group attribution error shares an [[attribution bias]] analogous to the [[fundamental attribution error]].<ref name=":0" /> Rather than focusing individual's behavior, it relies on group outcomes and and attitudes as its main for conclusions.
