Maddox W T, Prinzmetal W, Ivry R B, Ashby F G
Estes Lab, Department of Psychology, Harvard University, Cambridge, MA 02138.
Psychol Res. 1994;56(2):66-77. doi: 10.1007/BF00419713.
A probabilistic multidimensional model of location discrimination is developed and applied to data from an experiment in which subjects are required to determine whether a briefly presented horizontal and vertical bar are touching. The proposed gap-detection model assumes that errors in perception are due to variability in the perceived location and/or in the perceived length of the bars. A series of gap-detection models that allow variability only in perceived location were rejected on the basis of likelihood-ratio tests of overall goodness of fit. However, when the models were modified to account for: (a) a compression of the distance perceived between the bars (Wolford, 1975), or (b) the bisection illusion (Künnapas, 1955), excellent absolute fits to the data were obtained. A pair of models that suggests that the horizontal/vertical illusion or a response bias was operative failed. Applications of the model to more conventional object-perception experiments (e.g., the illusory-conjunction experiment) are discussed.
开发了一种位置辨别概率多维模型，并将其应用于一项实验数据，该实验要求受试者确定短暂呈现的水平条和垂直条是否接触。所提出的间隙检测模型假设，感知误差是由于条的感知位置和/或感知长度的变异性所致。基于整体拟合优度的似然比检验，一系列仅允许感知位置存在变异性的间隙检测模型被否决。然而，当模型被修改以考虑：(a)条之间感知距离的压缩（沃尔福德，1975年），或(b)二等分错觉（昆纳帕斯，1955年）时，得到了与数据极佳的绝对拟合。一对表明水平/垂直错觉或反应偏差起作用的模型未成功。讨论了该模型在更传统的物体感知实验（如错觉结合实验）中的应用。
