The present study sought to examine optimism and hope as predictors of suicidal behaviors (viz., suicide ideation and suicide attempt) in a sample of 179 adult primary care patients. Furthermore, we aimed to determine if the combination of hope and optimism would account for additional variance in the prediction model for suicidal behaviors among this population. In this cross-sectional study, participants completed measures of hope (viz., agency and pathways), optimism, and suicidal behaviors, as well as a series of demographics questions. Hierarchical regression analyses were conducted to test the aforementioned hypotheses. Results indicated that hope and optimism were both significant and unique predictors of suicidal behaviors among adult primary care patients. However, the hope-by-optimism interaction terms were not found to be significant. Some implications of the present findings are discussed.

The present study examined the role of vitality as a mediator of the association between dispositional hope and quality of life (QoL) (namely, physical health, psychological health, social relationships, and environment) in a sample of 101 adult primary care patients. Vitality was found to fully mediate the relationship between hope and physical health, social relationships, and environment. In addition, vitality was found to partially mediate the association between hope and psychological health. The present findings are consistent with a model in which vitality represents an important mechanism through which hope affects QoL in adults. Accordingly, these findings point to the importance of fostering both hope and vitality in efforts to promote positive QoL in adults.

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Depression is a serious public health concern and leading cause of global disability; in the U.S., it is estimated that over 35 million individuals suffer from depression. Health-related dysfunction, including impairment and poor quality of life, are often associated with depressive symptoms; however, little research has examined the interrelationships between these factors. Functional impairment, or the experience of difficulty conducting necessary activities of daily living, may contribute to emotional distress directly but may also impact perceived quality of life. Health-related quality of life (HRQL), which is conceptualized as a holistic and subjective perception of one’s physical and mental quality of life, is a wellestablished indicator of overall general health. Given the dearth of research examining the linkages between these variables, we hypothesized that greater levels of functional impairment would be positively related to depressive symptoms and that physical and mental HRQL would mediate this association, such that greater functional impairment would be associated with poorer mental and physical HRQL and, in turn, to greater depressive symptoms. Our sample (N=100; 70.3% female (N=71); 93% Caucasian (N=94); Mean Age = 42.18, SD = 12.83) was recruited from a rural, Southern Appalachian primary care clinic serving working and uninsured patients. Participants completed self-report measures: Instrumental Activities of Daily Living Scale, World Health Organization Quality of Life Scale - Brief, and the Center for Epidemiological Studies Depression Scale. Simple mediation analyses, consistent with Preacher and Hayes, were conducted covarying age, sex and ethnicity. In support of our hypothesis, the direct effect of functional impairment on depressive symptoms decreased but remained significant (DE=-1.39, SE=.66, p=.03) when mental HRQL was included as a mediator (IE lower 95% CI=-3.27, upper 95% CI=-.877), indicating partial mediation. In addition, the direct effect of functional impairment on depressive symptoms fell out of significance (DE=-1.18, SE=.33, p=.15) when physical HRQL was included as a mediator (IE lower 95% CI=-3.79, upper 95% CI=-.83), indicating full mediation. Our findings suggest that individuals experiencing functional limitations are less likely to report good mental and physical HRQL and, in turn, endorse higher levels of depressive symptoms. Our findings may have clinical implications; therapeutic enhancement of coping skills and problem-solving strategies may reduce psychological distress, whereas engagement with social and instrumental support networks may provide assistance with physical limits, thereby reducing risk for depressive symptoms in individuals experiencing functional impairment.