Abnormal behaviour: myths, realities, and controversies: the medical model applied to abnormal behaviour. Medical model proposes that it is useful to think of abnormal behaviour as a disease. Prior to the 18th century most thought abnormal behaviour was from superstition, demons, and the supernatural, or gods punishment. Ineffectual approaches to treatment eventually gave way to scientific investigation of the causes and cures of psychological disorders. Some critics are troubled because medical diagnoses of abnormal behaviour pin potentially derogatory labels on people. Research suggests that the stigmatization of mental disorders has remained stable or perhaps even increased. Thomas szasz disease can only effect body therefore there can be no mental illness. Involves deviance from social norms rather than an illness. Medi(cid:272)al (cid:373)odel"s disease a(cid:374)alog(cid:455) (cid:272)o(cid:374)(cid:448)e(cid:396)ts (cid:373)o(cid:396)al a(cid:374)d so(cid:272)ial (cid:395)uestio(cid:374)s a(cid:271)out (cid:449)hat is acceptable behaviour into medical questions. Etiology refers to the apparent causation and development history of an illness.