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. 2010 May 18;21(1):1–10. doi: 10.1093/cercor/bhq085

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© The Authors 2010. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/2.5), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Nonverbal reasoning problems. The figure shows typical examples of the different types of problem used in the reasoning task. Problems consisted of a rule derivation panel and a rule application panel that were presented simultaneously at the top and the bottom of the screen. Participants first worked out the stepwise rule in the top (rule derivation) panel. This rule could either be simple, consisting of 1 rule, or compound, consisting of 2 rules. They then had to apply the rule to work out which of the 3 objects at the bottom of the application panel followed the one at the top. If the rule was applied to surface features of the same type, for example, the number of small circles (top left) or the positions of colored squares (bottom left), then the problem was near analogical. By contrast, if the rules had to be remapped from one type of surface feature to another, for example, from the number of small circles to the number of sides (top right) or from the position of colored squares to the number of dots on a die (bottom right), then the problem was far analogical.