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In their work to advance the model for the cognitive processing of addiction Tiffany & Conklin (2000) would like their readers to consider the following scenario:
An alcoholic has been discharged recently from an inpatient-treatment program. He has not had a drink for over a month and is fully confident that he can maintain his abstinence. Sure, there are times when he craves a drink, but he's able to control his desire. One day, as he's driving home after work, he happens to pass by a bar he used to frequent. Suddenly, his craving, which has been so manageable, now seems overwhelming. Almost without thinking, he pulls into the parking lot, enters the bar, orders a drink and gulps it down. He has relapsed (p. 146).
According to Tiffany & Conklin (2000), any credible theory for addiction must answer the questions; Why can cravings for substances occur long after, even years after, quitting the substance? Also, why do episodes of cravings appear to occur within the context of specific situations? For example, situations associated with previous substance use can trigger cravings for the substance. The following models for addictive behaviour address these persistent craving and situational specific issues: