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stream between the original feeling of inferiority and the
imagined (and often unconscious) goal of superiority,
power, security, totality, which he believes necessary for
happiness. But the world is very large, and the possible
range, of experience is so great that an individual
“ muddling through ” life will come in contact with a
great many experiences which may not only not con¬
tribute to his goal, but may actually detract or divert
him from his unconscious purpose. We must exercise
some selectivity in our experiences. To accomplish this
end every one develops a formula with which to test each
experience in advance so as to determine whether or not
it may be assimilated into his unit pattern. We call this
formula the scheme of apperception. The scheme of
apperception is the many-branched antenna with which
the personality feels its way through life’s difficulties.
Psychic Selectivity and Experience
We need not invent a psychological device simply to
explain the circumstances of psychic selectivity. As in our
other explanations of human conduct we need but apply
the sound scientific principles of physiology to our
psychological thinking to find the truth. The ingestion
and digestion of food is the closest analogy in physiology
to the observed facts of psychology. The purpose of
eating, comparable to the goal of individual life, is to
keep alive. Food is the fuel we utilize to keep alive, just
as, in the psychological sphere, we seek experiences to
build up our psychic pattern of life. As all the food we
eat is not necessarily capable of assimilation in our bodies,
so all the experiences we meet in a life-time are not
necessarily valuable to our psychic patterns. We must
test a morsel before we eat it. To test it we have to use
our senses of sight, touch, smell, and feeling, and our
experience, plus these valuable feelers, helps us to avoid
poisonous food, i.e. material that cannot be assimilated.
If a morsel smells as if it were decayed we do not even
attempt to put it into our mouths, because experience
has taught us that this will lead to pain or disease. In