TY - JOUR
T1 - Working memory involvement in reaction time and its contribution to fluid intelligence
T2 - An examination of individual differences in reaction-time distributions
AU - Meiran, Nachshon
AU - Shahar, Nitzan
N1 - Publisher Copyright:
© 2018 Elsevier Inc.
PY - 2018/7/1
Y1 - 2018/7/1
N2 - Reaction-Time (RT) and Working-Memory (WM) are both correlated with fluid intelligence (GF). Prior work exploring the within-participant RT distributions shows (a) that the rate of exceptionally slow responses (indexed by the Tau parameter of the ex-Gaussian distribution) increases with WM-load, and (b) that individual differences in Tau are correlated with individual differences in WM. In the present individual-differences examination, we show that the correlation between Tau and GF was higher for tasks with an increased WM-load, i.e., with arbitrary (hence, novel) stimulus-response mapping. The results suggest that, when low-GF individuals perform reaction-time tasks with multiple novel and arbitrary stimulus-response rules, their reaction-time distribution is characterized by relatively frequent exceptionally slow responses.
AB - Reaction-Time (RT) and Working-Memory (WM) are both correlated with fluid intelligence (GF). Prior work exploring the within-participant RT distributions shows (a) that the rate of exceptionally slow responses (indexed by the Tau parameter of the ex-Gaussian distribution) increases with WM-load, and (b) that individual differences in Tau are correlated with individual differences in WM. In the present individual-differences examination, we show that the correlation between Tau and GF was higher for tasks with an increased WM-load, i.e., with arbitrary (hence, novel) stimulus-response mapping. The results suggest that, when low-GF individuals perform reaction-time tasks with multiple novel and arbitrary stimulus-response rules, their reaction-time distribution is characterized by relatively frequent exceptionally slow responses.
KW - Arbitrary stimulus-response mapping
KW - Ex-Gaussian distribution
KW - Fluid intelligence
KW - Reaction-time
KW - Working-memory
KW - Worst-performance rule
UR - http://www.scopus.com/inward/record.url?scp=85049351409&partnerID=8YFLogxK
U2 - 10.1016/j.intell.2018.06.004
DO - 10.1016/j.intell.2018.06.004
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AN - SCOPUS:85049351409
VL - 69
SP - 176
EP - 185
JO - Intelligence
JF - Intelligence
SN - 0160-2896
ER -