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Effects of free choice and outcome valence on the sense of agency: evidence from measures of intentional binding and feelings of control

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Abstract

Everyday actions can be characterized by whether they are freely chosen or commanded by external stimuli, and whether they produce pleasant or unpleasant outcomes. To assess how these aspects of actions affect the sense of agency, we asked participants to perform freely selected or instructed key presses which could produce pleasant or unpleasant chords. We obtained estimates of the key press–chord intervals and ratings of the feeling of control (FoC) over the outcomes. Interval estimates were used to assess intentional binding—the perceived temporal attraction between actions and their outcomes. Results showed stronger binding and higher FoC ratings in the free compared to instructed condition. Additionally, FoC was stronger for pleasant compared to unpleasant outcomes, and for pleasant outcomes that were produced by freely selected compared to instructed actions. These results highlight the importance of free choice and outcome valence on the SoA. They also reveal how freedom of action selection and pleasantness of action-outcomes can interact to affect the FoC.

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Notes

  1. Although the number of trials for each condition is rather low (12), we also analyzed the influence of valence on the interval estimations by factoring in the chord type (perfect fifth, perfect fourth, minor second, major second) and yet did not find any significant effects.

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Acknowledgements

This work was supported by a NSERC Discovery grant held by SSO (RGPIN5484-16) and a Trillium scholarship held by ZB.

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Correspondence to Zeynep Barlas or Sukhvinder S. Obhi.

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Barlas, Z., Hockley, W.E. & Obhi, S.S. Effects of free choice and outcome valence on the sense of agency: evidence from measures of intentional binding and feelings of control. Exp Brain Res 236, 129–139 (2018). https://doi.org/10.1007/s00221-017-5112-3

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  • DOI: https://doi.org/10.1007/s00221-017-5112-3

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