Behavioral biology is still a nascent field. Finding concrete biomarkers is the holy grail if diagnosis, but behavioral observation is the best we’ve got, and i

Behavioral biology is still a nascent field. Finding concrete biomarkers is the holy grail if diagnosis, but behavioral observation is the best we’ve got, and it so happens that certain traits tend to cluster, so the DSM and the like have resorted to shorthands. When biological mechanisms can be teased out, then we might see finer grained diagnoses and treatments.