The Interplay of Cognitive Load Theory and Attentional Bias in Heroin Addiction

Background: Current theories of addictive behavior suggest that individuals using heroin and other substances often exhibit an Attentional Bias (AB) towards environmental cues associated with substance consumption. Methods: This study aimed to assess AB in individuals with a history of substance dependence, specifically heroin users, utilizing Lavie's cognitive load theory (1995). Participants were categorized into a treatment group (TG), an abstinent group (AG), and a non-consumer group (NCG). An attentional task was designed based on Lavie's model, involving discriminating target letters (X or N) presented alone (low cognitive load, LCL), or among other letters (high cognitive load, HCL). Results: According to Lavie's model (1995), it was anticipated that in the TG and AG groups, compared to the NCG, AB would manifest only in the LCL condition. No significant differences were found regarding AB towards consumption-related images (i.e., emotional images) compared to neutral stimuli in the LCL condition. Conclusion: Our study did not find statistically significant results concerning AB between the TG and the AG when compared to the NCG. These findings contradict a significant body of research investigating selective attention in individuals with addiction, which consistently observed AB within this population.