Gambling-related Irrational Beliefs in the Maintenance and Modification of Gambling Behaviour

Abstract

The present study investigated a primary assumption of the cognitive theory of problem gambling, that gambling-related irrational beliefs lead directly to problematic gambling behaviour. Participants (N =114) received a message designed to increase their illusion of control (IOC) over a computerised roulette game, a message designed to decrease their IOC, or a neutral message. Participants then played the game, during which their gambling behaviour was recorded and irrational beliefs were measured. Based on the cognitive model, it was expected that those receiving the IOC enhancement message would evidence greater levels of irrational beliefs and correspondingly more intense gambling behaviour and that those in the IOC reduction condition would show decreased levels of both irrational beliefs and behaviour. However, although conditions differed as to levels of irrational beliefs, there were no significant differences in gambling behaviour. Results are discussed and implications of the results on the cognitive theory of problematic gambling are explored.