TY - JOUR
T1 - The organization of arithmetic facts in memory
T2 - Evidence from a brain-damaged patient
AU - Dagenbach, Dale
AU - McCloskey, Michael
N1 - Funding Information:
This research was supported by NIH Grant NS21047 and NIMH Postdoctoral Training Grant 5T32MH 18275-03 to Johns Hopkins University. We thank RG and his family for their patience and persistence throughout this study, Donna Aliminosa for collecting the data, and Walter Harley and Paul Macaruso for helpful comments and suggestions. Correspondence concerning this article and reprint requests should be addressed to Dale Dag-enbach, Department of Psychology, Wake Forest University, Box 7778 Reynolda Station, Winston-Salem, NC 27109 or Michael McCloskey, Cognitive Science Department, Johns Hopkins University, Baltimore, MD 21218.
PY - 1992/11
Y1 - 1992/11
N2 - We report a single case study of a brain-damaged patient with impaired arithmetic performance. Three principal findings are presented: First, in a task involving production of answers to simple arithmetic problems, the patient's performance was far better for subtraction than for addition or multiplication. Second, in all arithmetic operations performance was generally much better for problems potentially solvable by rule (e.g., 5 + 0) than for problems requiring retrieval of specific facts (e.g., 5 + 3). Third, the dissociation between subtraction and the other arithmetic operations obtained in the production task was not observed in a verification task. The implications of these findings for claims concerning the organization of stored arithmetic facts are discussed.
AB - We report a single case study of a brain-damaged patient with impaired arithmetic performance. Three principal findings are presented: First, in a task involving production of answers to simple arithmetic problems, the patient's performance was far better for subtraction than for addition or multiplication. Second, in all arithmetic operations performance was generally much better for problems potentially solvable by rule (e.g., 5 + 0) than for problems requiring retrieval of specific facts (e.g., 5 + 3). Third, the dissociation between subtraction and the other arithmetic operations obtained in the production task was not observed in a verification task. The implications of these findings for claims concerning the organization of stored arithmetic facts are discussed.
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U2 - 10.1016/0278-2626(92)90026-I
DO - 10.1016/0278-2626(92)90026-I
M3 - Article
C2 - 1449763
AN - SCOPUS:0026948962
SN - 0278-2626
VL - 20
SP - 345
EP - 366
JO - Brain and Cognition
JF - Brain and Cognition
IS - 2
ER -