Mental health articles
OF mental health care and mentally ill
genetic
Genetic and Familial Factors of specific phobias
Genetic and Familial Factors First-degree relatives of people with specific phobias are more likely themselves to have a specific phobia providing evidence for the importance of either genetic or environmental family factors in the disorder. More specifically, a few twin studies demonstrated a genetic involvement in specific phobias but the importance of environmental factors was […]
Tags: familial, genetic, phobias, specific phobias
Posted in research report | No Comments »
panic disorder genetic factors
panic disorder Genetic and Familial Factors A series of early studies conducted by a group of researchers in Iowa indicated that panic disorder subjects were more likely to have first-degree relatives with panic disorder (or agoraphobia) than nonanxious controls or subjects with other anxiety disorders. Such data have often been cited as evidence for a […]
Tags: disorder, genetic, panic
Posted in research report | No Comments »
Schizophrenia Genetic Studies
The massive literature on the genetics of schizophrenia can be assimilated into a multifactorial polygenic model but cannot be made to fit a singlemajor-locus model with high penetrance. There is no clear evidence against a simple multifactorial polygenic model, but Gottesman notes the possibility of a mixed model. This model includes a small number of […]
Tags: genetic, schizophrenia
Posted in research report | No Comments »
Molecular Genetic Studies of Psychopathology
Molecular Genetic Studies of Psychopathology Molecular genetic studies of most major forms of psychopathology have become a major area of contemporary etiological research. Approaches to f inding genes that underlie psychiatric disorders have included both association studies of the role of specific candidate genes, as well as genome scans of anonymous DNA markers by using […]
Tags: genetic, psychopathology
Posted in research report | No Comments »
genetic and environmental influences on depression and anxiety
Inclusion of Specific Environmental and Endophenotypic Variables in Behavior Genetic Models Standard behavior genetic analyses represent genetic and environmental influences as unspecif ied, anonymous, or ‘‘black box’’ variables. Kendler notes that the statistical power to detect shared environmental influences is low in such standard models, whereas incorporating specified environmental variables within a behavior genetic model […]
Tags: anxiety, depression, environmental, genetic
Posted in research report | No Comments »
Is Schizophrenia Genetic or Environmental
Is Schizophrenia Genetic or Environmental?Many family studies have been conducted to establish that a familial association exists between these disorders and schizophrenia, but fewer twin and adoption studies have been conducted to investigate the role that genetic influences play in their etiology. As stated earlier, different models exist to explain the genetic transmission of the […]
Tags: environmental, genetic, schizophrenia
Posted in mentally ill | No Comments »
Multivariate Behavior Genetic Studies of Mood and Anxiety
Disorder Symptoms Most multivariate behavior genetic contributions to the classification of mood and anxiety disorders have been based on three general approaches: (1) split an existing diagnostic category into subtypes and examine differences in the causes of the resulting subtypes; (2) look for common causes that cut across the symptoms of several diagnostic categories, using […]
Tags: anxiety, behavior, genetic, mood
Posted in research report | No Comments »
Genetic factors of anorexia and bulimia
Genetic factors Genetic factors may contribute to risk for both anorexia and bulimia. Klump et al., for example, estimated 74 per cent of the variance in anorexic behaviours to be attributable to genetic factors, following a twin study in which they found 50 per cent of MZ twins and no DZ twins to be concordant […]
Tags: anorexia, bulimia, genetic
Posted in research report | No Comments »