Affective components of perceived risk mediate the relation between cognitively-based perceived risk and colonoscopy screening.

Perceived risk is a common component of health decision making theory. When affective components of risk are assessed as predictors of a behavior, they are usually examined separately from cognitive components. Less frequently examined are more complex interplays between affect and cognition. We hypothesized that cognitive and affective risk components would both have direct effects on colonoscopy behavior/intentions and that affective components would mediate the relationship of cognitively-based perceived risk to colonoscopy screening. In two secondary analyses, participants reported their cognitive and affective perceived risk for colorectal cancer, past colonoscopy behavior, and future screening intentions. In both studies, cognitive and affective risk components were associated with increased screening behavior/intentions and cognitive risk components were mediated through affective risk. Given the impact of early detection on colorectal cancer prevention, educational strategies highlighting both components of risk may be important to increase screening rates.