The answer is rate the degree of dysfunctioning initiated by each traits of a person in identifying personality disorders. The diagnostic and statistical manual of mental disorders or as called as (DSM) is distributed by the american psychiatric association or as called as (APA) and deals a common language and standard criteria for the grouping of mental disorders.
I think homologous structures is a great example and idea that supports the theory of evolution. Homologous structures shows us how our futures evolved by natural selection.
