The psychosocial impact of cancer: exploring relationships between conditional goal setting and depression.

This study explores depression in cancer patients with reference to conditional goal setting (CGS) theory. CGS theory proposes that depressed individuals believe that personal happiness is conditional upon attainment of specific goals (personal CGS). Other individuals may set important goals believing that goal achievement is a necessary prerequisite of social acceptance and approval (social CGS). CGS has been found to contribute to depression in normal populations. 15.2% of the 67 newly diagnosed cancer patients in this study showed clinical levels of depression. A significant relationship was identified between personal CGS, rumination and depression, as predicted in CGS theory. Two months later, 46.7% of patients demonstrated clinical levels of depression. This later experience of depression was significantly related to social CGS. The results suggest CGS involving a misdirected pursuit of happiness is initially associated with depression whereas subsequent experiences of depression are related to a misdirected pursuit of social acceptance. Implications are discussed in terms of understanding the cancer patients' motivations controlling goal setting. It is suggested that successful psychotherapy for depression in cancer patients needs to examine the motivations controlling goal setting in addition to the process of goal pursuit.