María Roca studied executive function after frontal brain lesions. Comparing executive-task deficits with fluid intelligence asks which difficulties reflect shared demands and which remain unexplained by that measure. Statistical adjustment is informative about the tested relationship, while less structured activities can reveal demands not fully captured by standard laboratory tasks. [ref]
Executive function and fluid intelligence after frontal lobe lesions by María Roca and others. 2010, executive-task comparisons and fluid-intelligence adjustment
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