(3) Build up rules of linkage and association
between the various informational elements: for
example, for the pictogram ªrent a carº (Fig. 8),
even if the two signs ªkeyº and ªcarº were easily
and quickly recognised by all the users, the link
leading to the Þnal message was made in diverse
ways. The percentage of people that correctly
identiÞed the pictogram as ªrent a carº was of
12% of young people for a quick presentation and
12% of the remaining young people when there
were no time constraint; none of the old people
found the correct meaning. The type of answers
made revealed the e¤ort to Þnd a link between the
objects: 31% identify a ªgarage with a guardº, 15%
as a ªplace to duplicate car keysº, 19% as ªtake the
key of your car with youºor ªdo not forget to close
your carº...
These examples illustrate the consquences when
using a potential polysemic link which can have
di¤erent actions, implying both ªkeyº and ªcarº
such as to run the engine, to close the door of the
car, to duplicate the key of the car, to use the key of
the car park,...