An example of a wellness model includes one developed by Myers, Sweeny and Witmer. It incl

Despite the existence of a gray zone between health and illness, science can study the mechanisms by which illness occurs. Indeed, understanding mood regulation and its abnormalities, for example, proceeds independently from any set of diagnostic clinical criteria. Family studies, molecular genetics

A number of professions have developed specializing in mental disorders, including the medical speciality of psychiatry, divisions of psychology known as clinical psychology, abnormal psychology, positive psychology, clinical or mental health social work, mental health counselors, marriage and family therapists, psychotherapists, counselors and public Health professionals. Different clinical and academic professions tend to favor differing models, explanations and goals.