STRUCTURES IN 2-CHOICE REACTION-TIME DATA
STRUCTURES IN 2-CHOICE REACTION-TIME DATA
复制标题
DOI：
10.1037/0096-1523.13.2.300
复制
发表时间：
1987-05-01
影响因子：
2.1
通讯作者：
TAKANE, Y
中科院分区：
文献类型：
--
作者：
SERGENT, J;TAKANE, Y
对来自不同刺激组（不同色度和值的孟塞尔色、不同大小和半径倾角的圆、不同大小和倾斜的平行四边形、不同高度和宽度的矩形）的刺激对相同-不同判断的反应时间数据进行多维标度分析。本研究有三个主要目的：(a)说明了一种用于速度相同-不同判断的度量MDS的最大似然估计程序；(b)比较了在数据和资源限制条件下获得的不同数据得出的各种刺激集的空间表征与在无限观看和/或响应条件下收集的不同测量得出的相同刺激集的空间表征。(c)检查整体性和可分离性的概念，因为它们适用于刺激的维度分解。结果表明，虽然相同的空间度量最能代表每个受试者在每个刺激集内的感知差异，但个体差异和不同条件下在相似刺激集上获得的结果的差异是明显的。这些结果对多维刺激知觉的研究具有一定的启示意义。
Multidimensional scaling (MDS) analyses were carried out on reaction-time data obtained in same-different judgments between pairs of stimuli from various stimulus sets: Munsell colors varying in chroma and value, circles varying in size and radius inclination, parallelograms of varying size and tilt, and rectangles varying in height and width. Three main purposes were served by this study:(a) to illustrate a maximum likelihood estimation procedure for metric MDS applied to speeded same-different judgments,(b) to compare the spatial representations of various stimulus sets derived from dissimilarity data obtained in conditions of data-and resource-limitations with the spatial representations of the same stimulus sets derived from dissimilarity measures collected in conditions of unlimited viewing and/or responding, and (c) to examine the concepts of integrality and separability as they apply to the dimensional decomposability of stimuli. The results showed that although the same spatial metrics best represented perceived dissimilarities for each subject within each stimulus set, individual differences and divergence with results obtained on similar stimulus sets in different conditions were apparent. Some implications of these results for research on perception of multidimensional stimuli are suggested.