PSYCHOTHERAPY SCIENTIFIC AND RELIGIOUS

A Broad Perspective on Mental Healing

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I
HEALTH AND DISEASE
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{ sleepy sickness \ The onset of this disorder is an acute one of unmistakable severity. Beginning with headache and lassitude, lethargy soon develops. On recovery from this acute stage changes in character and temperament are often noted. Among the after-effects of encephalitis that have been observed are irritability, impulsiveness, stealing, running away, and in some cases retardation of mental development. Encephalitis definitely damages the brain tissues, but the exact relationship between the neural injury and the personality defects is not known. Further research on this problem may reveal some basic and much-needed facts concerning the correlation between brain structure and adjustive behaviour.
Some suggestions have been made concerning the relationship of ordinary infectious diseases to traits of personality. Stratton2l8 found that among 900 students those who had suffered from infectious diseases tended to be more irascible and to show more anger responses than those whose lives had been free from disease. Some diseases seemed to affect personality traits more than others. It is well known that tuberculosis makes the patient more volatile, impulsive and in many cases more erotic, while kidney diseases and still more liver troubles cause listlessness and depression.
Other influences which concern us here are the effects of heredity and environment. The clear-cut division between these two is somewhat artificial as the greatest hereditary aptitudes cannot function without a suitable environment, while on the other hand you cannot make a silk purse out of a sow's ear. The great development of the interest in heredity and eugenics in the second half of last century was connected with the doctrine of evolution by natural selection. The great emphasis on heredity, however, was not unconnected with the