Self-affirmation, a process by which individuals reflect on cherished personal values is a potent means of augmenting the effectiveness of threatening health communications. Individuals tend to be defensive against information suggesting their behavior puts them at risk for disease or negative health. Previous evidence suggests that self-affirmation may reduce defensiveness to threatening health information, increasing openness to the message and resulting in increased disease risk perceptions, disease-related worry, intentions to engage in preventive behavior, and actual behavioral change. One mechanism by which self-affirmation may be effective is by reducing self-focus and expanding self-concept. If this is the case, self-affirmation may not be effective in reducing defensiveness against information that is threatening to one s close other. We are proposing two studies to examine whether self-affirmation is equally effective at reducing defensiveness against threatening information for the self and for a close other. These studies will not only highlight conditions under which self-affirmation is effective, but also shed light on mechanisms underlying the effect.