With his difficulty in remembering is connected his difficulty of expression; and with it all goes a certain embarrassment, due to responsibility, personal fear, and dread of disgrace.

So the results finally obtained by this method are really very complex.
One of the curves, that given by the method of Selection (I), also shows memory to be interfered with by a certain influence.

We saw in connection with the experiments reported above that, even in the most elementary arrangements of squares in the visual fields, an element of contrast comes in to interfere with our judgment of size.

This we find confirmed in these experiments when the method of Selection is used.
By this method we show a number of squares side by side, asking the individual to select the one he saw before.

All the squares, being shown at once, come into contrast with one another on the background; and so his judgment of the size of the one he remembers is distorted.
This, again, is a real influence in our mental lives, leading to actual illusion.