ISSN 1671-3710
CN 11-4766/R

Advances in Psychological Science ›› 2016, Vol. 24 ›› Issue (3): 367-378.doi: 10.3724/SP.J.1042.2016.00367

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Joint Simon effect: Current research, influencing factors and theories

XU Sheng1; SONG Xiaolei2   

  1. (1 School of Psychology, Nanjing Normal University, Nanjing 210097, China)
    (2 School of Psychology, Shaanxi Normal University, Xi’an 710062, China)
  • Received:2015-05-18 Online:2016-03-15 Published:2016-03-15
  • Contact: XU Sheng, E-mail: SONG Xiaolei, E-mail:


The Joint Simon Effect (JSE) is a spatial stimulus-response compatibility effect that appears when two participants complete complementary components of a standard Simon task. The effect is considered as a valid index of the degree of self-other integration. Two main factors can influence the effect: social and nonsocial factors. Researchers explain JSE through the social facilitation theory, the co-representation account, the spatial response coding theory and the referential coding account. Future work on JSE should further explore the factors that influence it and the underlying brain mechanism, and further investigate its theoretical underpinnings.

Key words: joint Simon effect, self-other integration, co-representation account, referential coding account