School of Kinesiology, University of British Columbia, 210-6081 University Boulevard, Vancouver, BC, V6T 1Z1, Canada.
Department of Human Kinetics, St. Francis Xavier University, Courier 1 West St., PO Box 5000, Antigonish, NS, B2G 2W5, Canada.
Psychol Res. 2019 Jul;83(5):833-841. doi: 10.1007/s00426-017-0901-7. Epub 2017 Aug 9.
When a two-choice "Simon task" is distributed between two people, performance in the shared go/no-go task resembles performance in the whole task alone. This finding has been described as the joint Simon effect (JSE). Unlike the individual go/no-go task, not only is the typical joint Simon task shared with another person, but also the imperative stimuli dictate whose turn it is to respond. Therefore, in the current study, we asked whether removing the agent discrimination component of the joint Simon task influences co-representation. Participants performed the typical joint Simon task, which was compared to two turn-taking versions of the task. For these turn-taking tasks, pairs predictably alternated turns on consecutive trials, with their respective imperative stimulus presented either on 100% of their turns (fully predictable group) or on 83% of their turns (response-uncertainty group, 17% no-go catch trials). The JSE was absent in the fully predictable, turn-taking task, but emerged similarly under the response-uncertainty condition and the typical joint Simon task condition where there is both turn and response-execution-related uncertainty. These results demonstrate that conflict related to agent discrimination is likely not a critical factor driving the JSE, whereas conflict surrounding the need to execute a response (and hence the degree of preparation) appears fundamental to co-representation.
当两个人共同执行二选一的“Simon 任务”时，他们在共同的“Go/No-Go”任务中的表现类似于单独执行整个任务时的表现。这种现象被描述为联合 Simon 效应（JSE）。与个体的“Go/No-Go”任务不同，联合 Simon 任务不仅与另一个人共享，而且指令刺激还决定了轮到谁做出反应。因此，在当前的研究中，我们想知道，是否去除联合 Simon 任务中的代理区分成分会影响共现。参与者执行典型的联合 Simon 任务，并将其与两种轮流任务版本进行比较。对于这些轮流任务，参与者在连续的试验中可预测地交替进行，他们各自的指令刺激要么在他们的所有回合中（完全可预测组）呈现，要么在他们的 83%的回合中呈现（反应不确定性组，17%的是无反应的捕捉试验）。在完全可预测的轮流任务中，JSE 消失了，但在反应不确定性条件和典型的联合 Simon 任务条件下，JSE 再次出现，因为这两种条件下都存在与执行反应相关的不确定性和与轮流相关的不确定性。这些结果表明，与代理区分相关的冲突可能不是驱动 JSE 的关键因素，而与执行反应（以及准备程度）相关的冲突似乎是共现的基础。
