How Did The Four Groups Contribute To The Formation Of A Group Shape?

4 groups took part in the experiment, 2 groups were shown many cards displaying different shapes. The first groups shapes were different colours, and either had a black or white background. The second group was shown black or white shapes on a different coloured background. Both groups had been told to memorize the characteristics of both sets of shapes and coloured background. Stating of the colours reaction to the names of the shapes, a higher-level for the group that had the coloured shapes. The other 3 experiments that took part in this experiment continued to take place because of the limiting possible explanation of the effect. One of the 4 experiments showed that when the effect is acquired when the relevant stimuli are imagined rather