In this study, the researchers investigated whether training gamblers to use analytical thinking reduces their cognitive distortions about gambling. The researchers recruited 94 people who regularly gambled and had suffered gambling harm. The researchers randomly assigned participants to a treatment or control group. The treatment group received an online program that taught them how to use analytical thinking to overcome their cognitive distortions. The control group did not receive the program. The online program seemed to encourage people to have more accurate thoughts about gambling outcomes and to make safer gambling choices. More research is needed to explore whether this online program reduces gamblers’ cognitive distortions for a long time.