Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53673#.VM8uVSzQrzE Author(s) Sebastian Lemke 1* , Sunka De Vries 2 Affiliation(s) 1 Psychiatry and Psychotherapy Clinic of Jena University Hospital, Germany . 2 Ubbo Emmius Clinic, East Friesia Hospital, Germany . ABSTRACT Secular acceleration, for example an increase in height in groups of people over a period of time of more than a century, is a unique, perhaps “ecological” event. In the study presented here, historical patient files from the Jena Psychiatric Clinic were evaluated in relation to the problem of acceleration. A first sampling of 119 patient files for the years 1880-1890 revealed that, for children and adolescents up until the end of their twentieth year of life, the average age at the time of their first admission was 17 years. Compared to this, the first admission of a second sample of 132 patient records for the years 1985...
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