In the past, most physicians followed the biomedical model which posited that all illness can be explained by improper functioning of the biological systems. By 1977, With the large leaps in medical science forced and changing views of health and illness doctors and psychologists to begin, alike, began to questioning their old methods of treating patients.Taylor, S. (2012). Health psychology. (8 ed.). New York: McGraw-Hill Humanities/Social Sciences/Languages. This new method of thought is the biopsychosocial model and it was heavily influenced by two main issues: the specificity problem and the base rate problem.
