Previous studies have shown that stimuli with subjective salience could affect duration estimation. Although self-referential stimuli possess high biological and social importance, no prior study has examined whether and how self-referential information affects duration perception. Experiment 1 used the temporal bisection task to investigate participants' duration estimation of the presentation of their own name versus familiar and unfamiliar names. The results showed that participants overestimated the duration of their own name and became more sensitive to duration perception in such trials when compared with stranger's names. Given the specificity of personal name, Experiment 2 used two types of personality-trait words in self-referential and friend-referential manner as the targets of duration perception. The duration of self-referential negative trait words was perceived to be longer relative to friend-referential negative trait words. The mechanism underlying the subjective time dilation effect of self-referential information possibly involves the engagement of increased attentional resources, which could allow the individual to preserve a certain level of stability and positivity of self-knowledge.
Keywords: Attention; Duration perception; Self-bias; Self-referential information.
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