Word: petersons
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Dates: during 1990-1999
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...Peterson says he turned from political science to psychology, spending another year in school "doing straight psychology" before going on to earn a Ph.D. in clinical psychology...
After earning his degree, Peterson conducted research and then came to the United States two years ago as an assistant professor at Harvard, where he settled with his wife and two children...
...Peterson-began his research career studying drug and alcohol abusers with other psychologists. The researchers discovered that when non-alcoholics with a family history of alcoholism consume liquor, their heart rate goes up nearly twice as much as that of "normal people...
...Peterson says the excessive rise is due to the subjects' predisposition to alcohol and drugs which stimulate their positive systems...
According to Peterson, people have four types of psychological systems which either attract them toward pleasurable sensations or repel them from harmful ones...