Department of Psychology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, Germany.
Psychol Res. 2011 Sep;75(5):366-75. doi: 10.1007/s00426-010-0314-3. Epub 2010 Nov 18.
Recent research has shown that joint-action effects in a social Simon task provide a good index of action co-representation. The present study aimed to specify the mechanisms underlying joint action by considering trial-to-trial transitions. Using non-social stimuli, we assigned a Simon task to two participants. Each was responsible for only one of two possible responses. This task was performed alone (Individual go/nogo task) and in cooperation with another person who was sitting alongside (Joint go/nogo task). As a further control task, we added a Standard Simon task. Replicating previous findings (Sebanz et al. in Cognition 88:B11-B21, 2003), we found no spatial compatibility effect in the Individual go/nogo task but we did find one in the Joint go/nogo task. A more detailed analysis showed that a sequential modulation of the Simon effect was present in both the Joint and the Individual go/nogo tasks. We found reliable Simon effects in trials following Simon compatible trials not only in the Joint go/nogo task but also to a somewhat smaller extent in the Individual go/nogo task. For both these go/nogo tasks, sequential modulation effects were stronger for nogo/go transitions than for go/go transitions. This suggests that low-level feature binding and repetition mechanisms contribute to the social Simon effect related to the specific requirement not to respond on nogo trials.
最近的研究表明，社会 Simon 任务中的共同动作效应为动作共同表现提供了一个很好的指标。本研究旨在通过考虑试验间的转变来明确共同动作的机制。使用非社会刺激，我们为两个参与者分配了一个 Simon 任务。每个人只负责两个可能反应中的一个。该任务单独进行（个体 Go/Nogo 任务），并与坐在旁边的另一个人合作完成（联合 Go/Nogo 任务）。作为进一步的控制任务，我们添加了标准的 Simon 任务。与之前的发现（Sebanz 等人，在认知 88:B11-B21, 2003）一致，我们在个体 Go/Nogo 任务中没有发现空间兼容性效应，但在联合 Go/Nogo 任务中发现了一个。更详细的分析表明，在联合和个体 Go/Nogo 任务中都存在西蒙效应的顺序调制。我们不仅在联合 Go/Nogo 任务中，而且在个体 Go/Nogo 任务中，在与 Simon 兼容的试验之后的试验中都发现了可靠的 Simon 效应。对于这两个 Go/Nogo 任务，在 nogo/go 转换中比在 go/go 转换中，顺序调制效应更强。这表明，低水平的特征绑定和重复机制有助于与特定要求相关的社会 Simon 效应，即不在 nogo 试验中反应。
