In an effort to optimize the development of the self, each person develops
his or her own psychological type. Each type (Jung conceived of eight
types) consists of a combination of a person’s basic attitude and basic function.
Jung’s two attitudes are extroversion and introversion. These terms follow
societal stereotypes, with the extrovert being outgoing and confident
and the introvert being hesitant and reflective. These attitudes are combined
with four basic functions, or ways of relating to the world. These functions
are thinking, feeling, sensing, and intuiting, which are consistent
with a general societal view of these terms. Jung used the possible combination
of the attitudes and functions to form the eight possible psychological
types. Each person is thought to have dominance within one of the available
types.
In addition to providing key psychic structures, Jung provides personality
dynamics. He claimed that each person is endowed with psychic or libidinal
energy. Unlike Freud, however, Jung did not view this energy as strictly sexual.
Rather, he perceived it as life-process energy encompassing all aspects
of the psyche. According to Jung, this energy operates according to two
principles of energy flow: equivalence and entropy. The principle of equivalence
states that an increase in energy within one aspect of the psyche must
be accompanied by a decrease in another area. For example, if psychic energy
is increasing in the unconscious self, it must decrease elsewhere, such
as in the conscious ego. The principle of entropy states that when psychic
energy is unbalanced, it will seek a state of equilibrium. For example, it
would not be desirable to have the majority of one’s psychic energy located
in the conscious ego. The energy needs of the other levels of consciousness
must also be met.
Jung’s psychic structures, along with his views on the dynamics of personality,
have provided psychologists with a wealth of information to consider,
many complexities to address, and numerous possible ways to apply his ideas
to human development and personality assessment.