Networks of problems: social, psychological, and genetic influences on health.

An emerging idea in psychopathology conceives of disorders as networks of mutually-reinforcing symptoms that constitute the disorder rather than simply reflect it. This is similar to how social scientists already view socioeconomic status, and has affinities to how physical health problems compound in later life. Social, psychological, and physical conditions might therefore be thought of as networks of problems with 'causal bridges' that span different levels and bring low SES, mental health challenges, and physical health problems into pervasive relationships with one another. The network view suggests a more heterogeneous and less reductive view on genetic causes which accords with the highly diffuse causal architecture now known to be the hallmark of complex behaviors and traits.