used also less well-known two-digit fractions, the
participants had to compare these fractions to the simple fixed
standard fraction 3/5. This limits the claim that people are able to
activate holistic mental representations of less well-known fractions
when two initially unknown fractions are presented simultaneously
in a comparison task. For people who are not experienced
with fractions it is presumably very challenging to activate holistic
representations for such fractions, but for expert mathematicians e
the group of persons that we studied here e this could be possible