DiSCÂ® is a model of human behaviour that helps people understand â€œwhy they do what they doâ€. The DiSC dimensions of behaviour make up the DiSC model and interact with other factors to describe the typical behavioural styles of individuals. Organisations worldwide have embraced the language of DiSC to pave the way for successful training, coaching, and consulting applications. DiSC is the leading personal assessment tool used by over 40 million people to improve work productivity, teamwork, and communication. DiSC is a personal assessment tool used to improve work productivity, teamwork, and communication. DiSC is non-judgmental and helps people discuss their behavioral differences. If you participate in a DiSC programme, you'll be asked to complete a series of questions that produce a detailed report about your personality and behaviour.