Department of Psychology, Ludwig-Maximilians-Universität München Munich, Germany.
Front Integr Neurosci. 2012 Aug 25;6:63. doi: 10.3389/fnint.2012.00063. eCollection 2012.
Temporal-order judgment (TOJ) tasks are an important paradigm to investigate processing times of information in different modalities. There are a lot of studies on how temporal order decisions can be influenced by stimuli characteristics. However, so far it has not been investigated whether the addition of a choice reaction time (RT) task has an influence on TOJ. Moreover, it is not known when during processing the decision about the temporal order of two stimuli is made. We investigated the first of these two questions by comparing a regular TOJ task with a dual task (DT). In both tasks, we manipulated different processing stages to investigate whether the manipulations have an influence on TOJ and to determine thereby the time of processing at which the decision about temporal order is made. The results show that the addition of a choice RT task does have an influence on the TOJ, but the influence seems to be linked to the kind of manipulation of the processing stages that is used. The results of the manipulations indicate that the temporal order decision in the DT paradigm is made after perceptual processing of the stimuli.
时间顺序判断（TOJ）任务是一种重要的研究范式，用于研究不同模式下信息的处理时间。有很多关于时间顺序决策如何受到刺激特征影响的研究。然而，到目前为止，还没有研究表明添加选择反应时间（RT）任务是否会对 TOJ 产生影响。此外，目前尚不清楚在处理过程中何时做出关于两个刺激的时间顺序的决策。我们通过比较常规的 TOJ 任务和双重任务（DT）来研究第一个问题。在这两个任务中，我们操纵不同的处理阶段，以调查这些操纵是否对 TOJ 有影响，并确定做出时间顺序决策的处理时间。结果表明，添加选择 RT 任务确实会对 TOJ 产生影响，但这种影响似乎与所使用的处理阶段操纵的类型有关。操纵的结果表明，在 DT 范式中，时间顺序决策是在对刺激进行感知处理之后做出的。
