The Preparation--Take particular care in the arrangement of the
breakfast table in certain known order, so that you will later be able
to know exactly what was on it and where it stood. Put on the table
some article of distinct color. If there is any question of your being
able to check accurately the arrangement leave the table as it is for
an hour or so after the meal.
The Test--Some time after the family have left the table, not less
than an hour and preferably longer, ask each child separately, and
not in the hearing of the others, how the breakfast table looked that
morning. Let the child tell in detail what he can of the appearance of
the table, or if old enough let each write a description. The ease
with which this is done, the amount of definiteness displayed, and the
vividness with which the child reproduces the table will be an accurate
indication of the quality of images used in his imagination.