Ashby F G, Maddox W T
Department of Psychology, University of California, Santa Barbara 93106.
J Exp Psychol Hum Percept Perform. 1990 Aug;16(3):598-612. doi: 10.1037//0096-1523.16.3.598.
This article examines decision processes in the perception and categorization of stimuli composed of the separable psychological dimensions, orientation and size. The randomization technique (Ashby & Gott, 1988) of general recognition theory, which allows accurate estimation of a subject's decision boundary in a categorization task, is used in 4 experiments. Even though the stimulus components are clearly separable, it was found that Ss were not constrained to use separable response strategies, nor were they constrained to attend to distance to the prototypes. Instead, they used decision rules that were nearly optimal, even if this required information integration or for the Ss to attend to higher level category properties such as component correlation.
本文考察了由可分离的心理维度（方向和大小）构成的刺激的感知和分类中的决策过程。一般识别理论的随机化技术（阿什比和戈特，1988）可在分类任务中准确估计受试者的决策边界，本文在4个实验中使用了该技术。尽管刺激成分明显可分离，但研究发现，受试者既不受限于使用可分离的反应策略，也不受限于关注与原型的距离。相反，他们使用的决策规则近乎最优，即便这需要信息整合，或者受试者要关注诸如成分相关性等更高层次的类别属性。
