<P> Social influences have been found to be important, including abuse, neglect, bullying, social stress, traumatic events and other negative or overwhelming life experiences . The specific risks and pathways to particular disorders are less clear, however . Aspects of the wider community have also been implicated, including employment problems, socioeconomic inequality, lack of social cohesion, problems linked to migration, and features of particular societies and cultures . </P> <P> There are a number of theories or models seeking to explain the causes (etiology) of mental disorders . These theories may differ in regards to how they explain the cause of the disorder, how they treat the disorder, and their basic classification of mental disorders . There may also be differences in philosophy of mind regarding whether, or how, the mind is considered separately from the brain . </P> <P> During most of the 20th century, mental illness was believed to be caused by problematic relationships between children and their parents . This view was held well into the late 1990s, in which people still believed this child - parent relationship was a large determinant of severe mental illness, such as depression and schizophrenia . Today, the belief is held that the child - parent relationship is of small importance in terms of causing mental illness compared to biological and genetic factors . So, the perceived causes of mental illness have changed over time and will most likely continue to alter while more research is done in this area . </P> <P> Outside the West, community approaches remain a focus . </P>

In most cases what appear to be the two main causes of emotional or behavioral disorders