Working memory capacity and fluid abilities: The more difficult the item, the more more is better
The relationship between fluid intelligence and working memory is of fundamental importance to understanding how capacity-limited structures such as working memory interact with inference abilities to determine intelligent behaviour. Recent evidence has suggested that the relationship between a flui...
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doaj-e919c684b93f4f82ad050319d66f96512020-11-24T22:51:54ZengFrontiers Media S.A.Frontiers in Psychology1664-10782014-03-01510.3389/fpsyg.2014.0023963813Working memory capacity and fluid abilities: The more difficult the item, the more more is betterDaniel R Little0Stephan eLewandowsky1Stephan eLewandowsky2Stewart eCraig3The University of MelbourneUnviersity of BristolThe University of Western AustraliaThe University of Western AustraliaThe relationship between fluid intelligence and working memory is of fundamental importance to understanding how capacity-limited structures such as working memory interact with inference abilities to determine intelligent behaviour. Recent evidence has suggested that the relationship between a fluid abilities test, Raven's Progressive Matrices, and working memory capacity (WMC) may be invariant across difficulty levels of the Raven's items. We show that this invariance can only be observed if the overall correlation between Raven's and WMC is low. Simulations of Raven's performance revealed that as the overall correlation between Raven's and WMC increases, the item-wise point bi-serial correlations involving WMC are no longer constant but increase considerably with item difficulty. The simulation results were confirmed by two studies that used a composite measure of WMC, which yielded a higher correlation between WMC and Raven's than reported in previous studies. As expected, with the higher overall correlation, there was a signifi□cant positive relationship between Raven's item difficulty and the extent of the item-wise correlation with WMC.http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.00239/fullsimulationinferenceworking memory capacityreasoning skillsRaven's Progressive Matrices |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Daniel R Little Stephan eLewandowsky Stephan eLewandowsky Stewart eCraig |
spellingShingle |
Daniel R Little Stephan eLewandowsky Stephan eLewandowsky Stewart eCraig Working memory capacity and fluid abilities: The more difficult the item, the more more is better Frontiers in Psychology simulation inference working memory capacity reasoning skills Raven's Progressive Matrices |
author_facet |
Daniel R Little Stephan eLewandowsky Stephan eLewandowsky Stewart eCraig |
author_sort |
Daniel R Little |
title |
Working memory capacity and fluid abilities: The more difficult the item, the more more is better |
title_short |
Working memory capacity and fluid abilities: The more difficult the item, the more more is better |
title_full |
Working memory capacity and fluid abilities: The more difficult the item, the more more is better |
title_fullStr |
Working memory capacity and fluid abilities: The more difficult the item, the more more is better |
title_full_unstemmed |
Working memory capacity and fluid abilities: The more difficult the item, the more more is better |
title_sort |
working memory capacity and fluid abilities: the more difficult the item, the more more is better |
publisher |
Frontiers Media S.A. |
series |
Frontiers in Psychology |
issn |
1664-1078 |
publishDate |
2014-03-01 |
description |
The relationship between fluid intelligence and working memory is of fundamental importance to understanding how capacity-limited structures such as working memory interact with inference abilities to determine intelligent behaviour. Recent evidence has suggested that the relationship between a fluid abilities test, Raven's Progressive Matrices, and working memory capacity (WMC) may be invariant across difficulty levels of the Raven's items. We show that this invariance can only be observed if the overall correlation between Raven's and WMC is low. Simulations of Raven's performance revealed that as the overall correlation between Raven's and WMC increases, the item-wise point bi-serial correlations involving WMC are no longer constant but increase considerably with item difficulty. The simulation results were confirmed by two studies that used a composite measure of WMC, which yielded a higher correlation between WMC and Raven's than reported in previous studies. As expected, with the higher overall correlation, there was a signifi□cant positive relationship between Raven's item difficulty and the extent of the item-wise correlation with WMC. |
topic |
simulation inference working memory capacity reasoning skills Raven's Progressive Matrices |
url |
http://journal.frontiersin.org/Journal/10.3389/fpsyg.2014.00239/full |
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