Figure 1.
Congruent and incongruent dot comparison task trials.
Both pairs of images show the trial 21 vs. 26 dots but (A) is a congruent trial, where the more numerous array has larger dots and a larger area, and (B) is an incongruent trial, where the more numerous array has smaller dots and a smaller area.
Figure 2.
The relationship between calculation scores and dot comparison task performance.
In Experiment 1, children’s scores on the Woodcock-Johnson III calculation subtest was significantly correlated with performance on the incongruent, but not the congruent trials of the dot comparison task.