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. 2015 Sep 18;9:467–478. doi: 10.1016/j.nicl.2015.09.007

Fig. 1.

Fig. 1

Examples similar to items from the Raven's Standard Progressive Matrices. This fluid reasoning test is composed of 60 matrix problems of increasing complexity. To solve the matrices, participants have to choose among 8 choices the one that best fill in the missing entry (bottom right of the matrix). The three examples represent the three complexity levels included in our study: figural, analytical and complex analytical.