Abstract
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.
Original language | English |
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Pages (from-to) | 176-185 |
Number of pages | 10 |
Journal | Intelligence |
Volume | 69 |
DOIs | |
State | Published - 1 Jul 2018 |
Keywords
- Arbitrary stimulus-response mapping
- Ex-Gaussian distribution
- Fluid intelligence
- Reaction-time
- Working-memory
- Worst-performance rule
ASJC Scopus subject areas
- Experimental and Cognitive Psychology
- Developmental and Educational Psychology
- Arts and Humanities (miscellaneous)