One of the most controversial research issues currently under discussi
on in the area of social inference of traits based on behavioral infor
mation is whether these inferences are formulated spontaneously or if
they are consciously controlled by perceivers. This article opposes th
is dichotomy considering the debate over spontaneity vs. control of th
e process is a matter of degree involving the type of trait and the pe
rceivers goal in the process. To this end we have carried out an exper
iment involving 108 subjects,distributed in various groups according t
o the aim of the process (impression formation, memorization of behavi
or or numbers), trait type (facility vs. difficulty to be associated w
ith a type of behavior), and the clue that was provided in the memory
test (related to the actor, to the behavior or without clue). The depe
ndent variable was the number of remembered behaviors. The results sho
wed that there is a spontaneous inference in conditions of impression
formation and memorization of sentences but not in the memorization of
numbers. Furthermore, the spontaneous inference only occurred when th
e traits were easy to associate with a type of behavior. Therefore it
leads us to conclude that the two factors considered have influence on
spontaneity in the process of trait inference.