And, most important, changes in personality did not predict changes in politics.
Could someone develop a "pure" musicophilia, without any accompanying changes in personality or behavior?
The changes in personality were not large, but they were measurable.
Changes in personality or mental ability are rare in cases of brain tumor.
The first signs are subtle: small changes in personality that grow increasingly acute over the next five to ten years.
Further analyses suggested that these changes in personality were not temporary, but lasted long after the therapeutic treatments had finished.
Some studies have linked Toxoplasma infection with subtle changes in personality, as well as with a higher risk of schizophrenia.
But was it really that Mr. Giuliani underwent significant and lasting changes in personality over the course of his eight-year tenure?
The observed changes in personality traits have led to a great deal of speculation about the conditions and causes of these changes.
Sleeping sickness attacks the central nervous system, alters the biological clock (circadian rhythm), and causes changes in personality including confusion, slurred speech, seizures and difficulty walking and talking.
Despite the designation "mild," even a single concussion can produce serious symptoms, including severe headaches, difficulty sleeping, problems with memory and concentration, and even changes in personality.
