Thesis - Instituto de Telecomunicações

148 APPENDIX B. TESTSFigure B.1: The cognitive tests starting web page.Given that the figures have 3 properties and that there are three hint figures plus asolution figure, a random set of hint figures always has a logical solution. This follows fromthe possible application of 3 logical rules for a property:1) equal - all figures share the same property value — the fourth figure will also havethe same property value.2) paring - two figures share a property value, and one has a unique property value —the fourth figure will have to share the property value of the figure with the unique propertyvalue. The figures are associated in pairs.3) exclusion - the property is different in every figure —- the fourth figure will have theproperty value that is missing in the three hint figures, following an exclusive rule.The following examples will use a notation for each figure with the three properties:(p 1 ,p 2 ,p 3 ). We can assume that p 1 corresponds to color, p 2 to shape and p 3 to number ofobjects. Each property can take 4 different values. The logical deduction will use a rule foreach property with the abbreviations: e - equal; p - paring; x - exclusion.In this example all the properties are equal and the equal rule applies for each one. Theresulting figure is equal to the presented.