"It is not thought as such that can move anything, but thought which is
for the sake of something and is practical." This discerning insight,
which dates back more than 2000years to Aristotle, seems to have been
ignored by most psycholo- gists. For more than 40years theories of human
action have assumed that cogni- tion and action are merely two sides of
the same coin. Approaches as different as S-O-R behaviorism, social
learning theory, consistency theories, and expectancy- value theories of
motivation and decision making have one thing in common: they all assume
that "thought (or any other type of cognition) can move any- thing,"
that there is a direct path from cognition to behavior. In recent years,
we have become more and more aware of the complexities in- volved in the
relationship between cognition and behavior. People do not always do
what they intend to do. Aside from several nonpsychological factors
capable of reducing cognition-behavior consistency, there seems to be a
set of complex psychological mechanisms which intervene between
action-related cognitions, such as beliefs, expectancies, values, and
intentions, and the enactment of the be- havior suggested by those
cognitions. In our recent research we have focused on volitional
mechanismus which presumably enhance cognition-behavior consistency by
supporting the main- tenance of activated intentions and prevent them
from being pushed aside by competing action tendencies.