This study draws a nexus between heuristic-systematic information processing and the theory of planned behavior through a model of risk information seeking and processing. The model proposes that the form of information processing individuals apply to risk information from the media and other sources affects beliefs, evaluations, and attitudes considered important to making judgments about performing risk-reducing behaviors. This study found that deeper, more systematic processing of risk information is positively related to evaluation strength, attitude strength, and the number of strongly held behavioral beliefs actively considered by respondents when thinking about environmental hazards. The relationships were consistent, appearing across two communities and three risks (two health risks and one ecological risk), and held up under multiple statistical controls.