TY  - JOUR
A1  - Shaki, Samuel
A1  - Fischer, Martin H.
T1  - Competing Biases in Mental Arithmetic
BT  - When Division Is More and Multiplication Is Less
JF  - Frontiers in human neuroscience
N2  - Mental arithmetic exhibits various biases. Among those is a tendency to overestimate addition and to underestimate subtraction outcomes. Does such “operational momentum” (OM) also affect multiplication and division? Twenty-six adults produced lines whose lengths corresponded to the correct outcomes of multiplication and division problems shown in symbolic format. We found a reliable tendency to over-estimate division outcomes, i.e., reverse OM. We suggest that anchoring on the first operand (a tendency to use this number as a reference for further quantitative reasoning) contributes to cognitive biases in mental arithmetic.
KW  - heuristics and biases
KW  - numerical cognition
KW  - mental arithmetic
KW  - mental number line
KW  - operational momentum
Y1  - 2017
U6  - https://doi.org/10.3389/fnhum.2017.00037
SN  - 1662-5161
VL  - 11
PB  - Frontiers Research Foundation
CY  - Lausanne
ER  - 
TY  - GEN
A1  - Shaki, Samuel
A1  - Fischer, Martin H.
T1  - Competing Biases in Mental Arithmetic
BT  - When Division Is More and Multiplication Is Less
N2  - Mental arithmetic exhibits various biases. Among those is a tendency to overestimate addition and to underestimate subtraction outcomes. Does such “operational momentum” (OM) also affect multiplication and division? Twenty-six adults produced lines whose lengths corresponded to the correct outcomes of multiplication and division problems shown in symbolic format. We found a reliable tendency to over-estimate division outcomes, i.e., reverse OM. We suggest that anchoring on the first operand (a tendency to use this number as a reference for further quantitative reasoning) contributes to cognitive biases in mental arithmetic.
T3  - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 312 
KW  - heuristics and biases
KW  - mental arithmetic
KW  - mental number line
KW  - numerical cognition
KW  - operational momentum
Y1  - 2017
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-103492
ER  -