In the 1850s, Morel initiated the application of genetics to mental diseases. His "psychopathic degeneration" theory expressed that mental disorders have a genetic origin and worsen over generations; therefore, neurotic symptoms in a patient would ultimately give rise to severe mental illnesses in his or her progeny. In the 1920s, Rudin, Luxenburger, and Schultz from the Munich school of medicine intensively studied the mode of inheritance of schizophrenia and refined the methodology of twin studies. However, they soon found that Mendelian modes of inheritance, which made it easy to calculate the morbid risks for different degrees of relatives of probands, could not be applied to the study of the inheritance of major psychoses.
Was this article helpful?
The comprehensive new ebook All About Alzheimers puts everything into perspective. Youll gain insight and awareness into the disease. Learn how to maintain the patients emotional health. Discover tactics you can use to deal with constant life changes. Find out how counselors can help, and when they should intervene. Learn safety precautions that can protect you, your family and your loved one. All About Alzheimers will truly empower you.