Correspondence effects with manual gestures and postures: A study of imitation.

TLDR

The study applies SRC theory to action imitation and proposes two independent mechanisms—movement‑based for dynamic gestures and state‑based for static postures. Six experiments used a Simon‑paradigm design to examine how color cues interfere with hand gestures and postures, with the gestures serving as responses. Strong correspondence effects were observed for gestures and postures, explained by shared stimulus–response representations, and the results have implications for SRC and action‑imitation theories.

Abstract

In this study, the authors applied methods and theories from research of stimulus-response compatibility (SRC) to action imitation. In 6 experiments, they adopted the logic of the Simon paradigm (B. Hommel & W. Prinz, 1996) to explore interference between task-relevant symbolic stimulus features (color) and task-irrelevant iconic stimulus features (2 hand gestures and 2 postures). The same 2 hand gestures served as responses. Pronounced correspondence effects for both gestures and postures showed up throughout. In line with theories of SRC, the authors account for these correspondence effects in terms of overlap arising between stimulus and response features in a common representational domain. As a specific extension of this approach, they propose 2 functionally independent mechanisms: One operates movement-based when dynamic information is provided, and the other operates state-based with static postures as stimuli. Implications for theories of both SRC and action imitation are discussed.