To test a recently proposed dual-process theory of supportive communication outcomes, participants (N = 328) assumed they had experienced a mildly or moderately problematic situation. They then evaluated supportive messages varying in person centeredness, purportedly provided by either an acquaintance or a friend. Participants’ perceived support availability (PSA) was also assessed. As predicted, the recipient factor (PSA) individually and in conjunction with the contextual factor (problem severity) moderated the effect of the message factor (message person centeredness) on helpfulness evaluations. Modest support was observed for the hypothesis that the source factor (friend vs. acquaintance) influences evaluations when messages are processed less extensively. Implications for the dual-process theory of supportive communication outcomes are discussed.