While physiological factors may contribute to the occurrence
of emotional disorder, they should not be allowed to obscure the
psychological relationships involved. Since there is indisputable
evidence that the reasoning agent is motivated to behave in a
self-evaluating manner (although the ego itself determines the
criteria), it is only reasonable to presume that it is motivated
to think in a self-evaluating manner. Physiological dysfunction
could quite possibly affect this natural conation, thereby reducing
the capacity of the ego to maintain emotional integrity (self-value).
The result of a reduced self-value, albeit from physiological
factors, might then reveal itself in the form of emotional disorder.
Thus, while the hallucinations of the schizophrenic may indirectly
result from chemical imbalances in the brain, they are probably
a more immediate consequence of an ego no longer able to function
in its role as coordinator of cognitive activity (similar to what
occurs in a semi-conscious dream state). Although admittedly a
theoretical interpretation, it reveals that the presence of contributing
physiological factors does not disprove the possibility that emotional
disorder (and its visible effects) always emanates from emotional
causes.
Brain damage may also appear to cause emotional disorder. However,
consistent with the supposition that emotional disorder emanates
from disruption to one's emotional integrity (loss of self-value),
it is proposed that the realization of the loss of cognitive function
would be a cause of self-devaluation. This might be a direct realization
or a realization of no longer being perceived as "normal"
by others.