Differences in attentional bias between self-related information and external cues from others in individuals with social anxiety: An event-related potential study

Individuals with high social anxiety show a more considerable attentional bias toward self-relevant information and outwardly threatening stimuli than do those with low social anxiety. Some studies have investigated the attentional bias between self-relevant information and external social cues in people with high social anxiety but have not reached consistent conclusions. This study used a modified dot-probe task and collected temporal and electroencephalogram responses to three self-other face pairs among 15 people with high social anxiety and 20 people with low social anxiety. Both groups responded quicker to self-relevant information than external social cues. Others' emotional potencies moderated the attentional bias. Individuals with high social anxiety exhibited larger P1 amplitudes and smaller N170 amplitudes (mainly in the right hemisphere) for all face pairs and larger P2 amplitudes for the self-neutral and other-angry face pairs than those with low social anxiety. These findings suggest that people with social anxiety prioritize allocating attentional resources to self-relevant information, with others' angry faces having the greatest influence on the allocation. Individuals with high social anxiety initially exhibit more attentional vigilance and less structural coding for face pairs, followed by heightened engagement with threatening cues compared to those with low social anxiety.