Social addiction or nicotine addiction? The effect of smoking social motivation on inhibitory control under smoking social cues: Evidence from ERPs.

Introduction: Previous studies and theoretical models suggest that the decreasing effect of smoking-related cues on inhibitory control in individuals who smoke is one of the underlying mechanisms of smoking behavior. However, many studies have overlooked the effects of other types of smoking-related cues, such as social cues. Moreover, previous studies have lacked investigation into whether this decreasing effect is influenced by internal factors. The present study aims to integrate behavioral and electrophysiological indicators to investigate the effect of smoking social cues on inhibitory control in individuals who smoke, as well as the moderating role of social motivations.

Method: In Experiment 1, a visual Go/NoGo paradigm with four types of backgrounds (neutral, neutral social, smoking object, and smoking social backgrounds) was used to record the error rates and reaction times of 32 participants who smoke. In Experiment 2, the Go/NoGo paradigm with two types of backgrounds (smoking object and smoking social backgrounds) was used to record the error rates, reaction times, and amplitudes of the N2 and P3 event-related potentials among 30 participants who smoke with varying degrees of primed smoking social motivation.

Results: (1) Individuals who smoke had higher commission error rates and larger P3 amplitude under smoking social background than under smoking object background; (2) individuals who smoke with primed high smoking social motivation, rather than low motivation had higher commission error rates and larger P3 amplitude under smoking social background than under smoking object background.

Conclusions: Smoking social cues have a greater capacity to decrease inhibitory control in people who smoke than smoking object cues, and this decreasing effect is bolstered by smoking social motivation.