One way to motivate people to reduce the discrepancy between their proenvironmental attitudes and anti-environmental behavior is to make them feel hypocritical. Hypocrisy occurs when people publicly advocate a prosocial course of action and then are reminded of times when they failed to perform the proposed course of action in the past. When made aware of their past lapses to “practice what they preach,” people become motivated to bring their future behavior in line with their advocated attitudes and beliefs. By changing their behavior to make it consistent with their prosocial attitudes and beliefs, hypocrites restore their
sense of self-integrity and also take the steps that reduce their contribution to the problem.