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dc.contributor.authorLiu, Fuchang
dc.date.accessioned2013-12-11T16:42:59Z
dc.date.available2013-12-11T16:42:59Z
dc.date.issued2013-09
dc.identifier.citationLiu, Fuchang. 2013. Are exact calculation and computational estimation categorically different?. Applied Cognitive Psychology, v.27:Issue5:pp.672–682, September/October 2013en_US
dc.identifier.issn0888-4080
dc.identifier.otherWOS:000324914900014
dc.identifier.urihttp://dx.doi.org/10.1002/acp.2947
dc.identifier.urihttp://hdl.handle.net/10057/6956
dc.descriptionClick on the DOI link to access the article (may not be free).en_US
dc.description.abstractThis study examined, through the problem-size effect, whether exact calculation and computational estimation are categorically different. In Experiment 1, 26 teacher candidates, most of whom were female, Caucasian, and in their early 20s, estimated 27 randomly generated double-digit multiplication problems. In Experiment 2, 44 similar participants estimated and calculated a common set of double-digit multiplication problems. Analysis of reaction times and error rates indicates that the problem-size effect holds true for exact calculation but not for estimation. In estimation, as problem size increases, reaction times do not increase, nor does the rate of unreasonable estimates. Instead, the difference between a factor's unit digit and the nearest ten to be rounded to was a primary contributor to the variance of reaction times. It is concluded that exact calculation and computational estimation are computationally, cognitively, and structurally different processes. Furthermore, it is suggested that estimation skills be given separate, dedicated attention in schools. Copyright © 2013 John Wiley & Sons, Ltd.en_US
dc.language.isoen_USen_US
dc.publisherWiley-Blackwellen_US
dc.relation.ispartofseriesApplied Cognitive Psychology;v.27:Issue5
dc.subjectPROBLEM-SIZEen_US
dc.subjectMULTIPLICATION FACTSen_US
dc.subjectNUMERICAL COGNITIONen_US
dc.subjectTEMPORAL ASPECTSen_US
dc.subjectWORKING-MEMORYen_US
dc.subjectSTRATEGIESen_US
dc.subjectAPPROXIMATEen_US
dc.subjectKNOWLEDGEen_US
dc.subjectSTUDENTSen_US
dc.subjectSKILLen_US
dc.titleAre exact calculation and computational estimation categorically different?en_US
dc.typeArticleen_US


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