Department of Psychology, Center for Mind and Brain, University of California, Davis, California, United States of America.
PLoS One. 2013 Aug 16;8(8):e71698. doi: 10.1371/journal.pone.0071698. eCollection 2013.
Although visual fixations are commonly used to index stimulus-driven or internally-determined preference, recent evidence suggests that visual fixations can also be a source of decisional bias that moves selection toward the fixated object. These contrasting results raise the question of whether visual fixations always index comparative processes during choice-based tasks, or whether they might better reflect internal preferences when the decision does not carry any economic or corporeal consequences. In two experiments, participants chose which of two objects were more aesthetically pleasing (Exp.1) or appeared more organic (Exp.2), and provided independent aesthetic ratings of the stimuli. Our results demonstrated that fixation parameters were a better index of choice in both decisional domains than of aesthetic preference. The data support models in which visual fixations are specifically related to the evolution of decision processes even when the decision has no tangible consequences.
尽管视觉注视通常被用来标记受刺激驱动或内部决定的偏好，但最近的证据表明，视觉注视也可能成为决策偏差的来源，使选择偏向注视的物体。这些相互矛盾的结果提出了一个问题，即在基于选择的任务中，视觉注视是否总是标记比较过程，或者当决策不带来任何经济或肉体后果时，它们是否更能反映内部偏好。在两项实验中，参与者选择两个物体中哪个更具审美吸引力（实验 1）或哪个看起来更具生物性（实验 2），并对刺激物进行独立的审美评价。我们的结果表明，在这两个决策领域，注视参数比审美偏好更能很好地标记选择。这些数据支持这样的模型，即即使决策没有实际后果，视觉注视也与决策过程的演变有特定关系。
