Yang Cheng-Ta, Little Daniel R, Hsu Ching-Chun
Department of Psychology, National Cheng Kung University, No. 1, University Rd., Tainan, 701, Taiwan,
Atten Percept Psychophys. 2014 Nov;76(8):2256-75. doi: 10.3758/s13414-014-0709-0.
Selective attention has been known to play an important role in decision making. In the present study, we combined a cueing paradigm with a redundant-target detection task to examine how attention affects the decision process when detecting the redundant targets. Cue validity was manipulated in two experiments. The results showed that when the cue was 50 % valid in one experiment, the participants adopted a parallel self-terminating processing strategy, indicative of a diffuse attentional focus on both target locations. When the cue was 100 % valid in the second experiment, all of the participants switched to a serial self-terminating processing strategy, which in our study indicated focused attention to a single target location. This study demonstrates the flexibility of the decision mechanism and highlights the importance of top-down control in selecting a decision strategy.
众所周知，选择性注意在决策过程中起着重要作用。在本研究中，我们将提示范式与冗余目标检测任务相结合，以考察在检测冗余目标时注意力如何影响决策过程。在两个实验中对提示有效性进行了操纵。结果表明，在一个实验中当提示有效性为50%时，参与者采用并行自终止加工策略，这表明对两个目标位置的注意力较为分散。在第二个实验中当提示有效性为100%时，所有参与者都切换为串行自终止加工策略，在我们的研究中这表明注意力集中于单个目标位置。本研究证明了决策机制的灵活性，并强调了自上而下的控制在选择决策策略中的重要性。
