Super-Capacity Me! Super-Capacity and Violations of Race Independence for Self- but Not for Reward-Associated Stimuli

Sui, Jie and Yankouskaya, Alla and Humphreys, Glyn (2015) Super-Capacity Me! Super-Capacity and Violations of Race Independence for Self- but Not for Reward-Associated Stimuli. Journal of Experimental Psychology: Human Perception and Performance, 41 (2). pp. 441-452. ISSN 1939-1277

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Participants are biased in responding to stimuli associated with themselves compared with stimuli related
to other people. This self-bias may reflect the reward value of self-related stimuli (Sui, He, & Humphreys,
2012). In this article, we examined the identification of self- and reward-associated stimuli under
conditions in which either single or redundant stimuli were presented. The redundant stimuli could be the
same shape or they could be different shapes both associated with either the self or a friend or high or
low reward. We formally tested whether the redundant stimuli violated the independent race model for
the identification of multiple stimuli (Miller, 1982) and whether the redundant stimuli were processed
with super- or limited-capacity (Townsend & Eidels, 2011). We found that redundant self stimuli alone
both violated the independent race model and were processed with super-capacity. In contrast, the
redundant high reward stimuli did not show race inequality and were associated with limited capacity
processing. The data advance our theoretical understanding of self bias both by demonstrating that it can
be distinguished from effects of reward, and by suggesting that self-bias can result from the enhanced
integration of stimuli associated with the self. The implications for understanding self bias effects are

Item Type: Article
Additional Information and Comments: This article may not exactly replicate the final version published in the APA journal. It is not the copy of record. Final published version available at
Keywords: self-bias; reward-bias; redundancy gain; race model; capacity coefficient
Faculty / Department: Faculty of Science > Psychology
Depositing User: Alla Yankouskaya
Date Deposited: 20 Nov 2017 11:09
Last Modified: 20 Nov 2017 11:09

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