Shaping Perceptions by Hand: The Influence of Motor Fluency on Facial Expression Judgment

AbstractResearch has shown that individual variation in our bodies, such as differential hand dominance, can influence the way that we interact with and perceive the world (Casasanto, 2009). For example, right-handed individuals are more likely to associate their right spatial plane as more positive than their left, an effect that is switched in left-handed individuals. Here, we explored whether asking participants to use their dominant ("good") versus nondominant ("bad") hand on a motor task influenced subsequent valanced facial judgment. Results demonstrate that simply asking a participant to use their right or left hand to complete a task can have a significant effect on the perceived valence of neutral faces. These findings add to the evidence that the way we physically interact with our world may have important consequences for our perceptions of social stimuli.

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