Over a number of years psychologists tested the memory of people in three different conditions. The challenge for all conditions was to remember a number of objects on a list.
Memorise by writing the list of objects down
Memorise by tracing drawings of pictures of the objects on the list
Memorise by drawing pictures of the objects on the list.
The group with the best memory was Condition C; those who had drawn a picture of the objects from the list. It is thought that this is because drawing requires a deeper level of observation and attention in order to identify the object