Previous work has demonstrated that children understand sentences with
actional verbs better than nonactional verbs. This ACTIONALITY EFFECT
has been reported to be restricted to passives and to be independent
of experimental context. The present experiment was conducted with 48
French-speaking children aged 5;0-7;11. The actionality effect was stu
died by systematically varying the voice of the test sentences and the
voice of the interpretive requests. Pictures corresponding or not to
the predicate-argument structure of the sentences were presented to th
e subjects, who were independently classified as visualizers or nonvis
ualizers, in order to investigate the relation between sentence action
ality and mental imagery. The interaction between actionality, voice o
f sentence, and interpretive request revealed that the actionality eff
ect depends on the type of task used in order to assess comprehension,
and that it can be reversed in some conditions. Our results also sugg
est that the actionality effect is linked to mental imagery. Visualize
rs demonstrated better comprehension of actional sentences than nonvis
ualizers, whereas the reverse was true for nonactional sentences. Ment
al image may serve as a support for the computations involved in sente
nce comprehension.