This document presents the A-B-C model of risk culture. The model shows that attitude forms behavior, which shapes culture, which then influences attitude and behavior. Risk culture is defined as the values, beliefs, knowledge and understanding about risk that is shared by a group. Poor risk culture can negatively impact risk management and decision making. Developing a positive risk culture involves assessing the current culture, desired culture, and gaps using models like the IRM Risk Culture Aspects Model. Changes focus on managing risk attitudes to influence risk behavior and build a new risk culture over time.