Catherwood D, Crassini B, Freiberg K
University of Queensland.
Child Dev. 1989 Jun;60(3):752-62.
This study confirms that infants, like older children, are capable of responding "categorically" to stimuli of different shape if these are similar in hue. 24 infants (mean age 20.0 weeks) were familiarized to a stimulus in 1 hue (dominant wavelength 515 nm) and in either of 2 different shapes (face of a bear or a rabbit) and then presented with 4 main test comparisons in which the familiar stimulus was paired with a novel stimulus in either the familiar or the alternate (novel) shape and in a novel hue from the same or a different category (dominant wavelengths being 548 and 482 nm, respectively, and equally different from the familiar hue). Infants displayed a preference for the novel stimuli only in the new-category hue. Control tasks with a further 40 infants (same mean age as experimental group) eliminated alternative explanations of this pattern of response in terms of differential brightness of the hues, hue preferences, or inability to discriminate the shapes.
这项研究证实，婴儿与年龄较大的儿童一样，如果不同形状的刺激在色调上相似，他们能够对其做出“分类”反应。24名婴儿（平均年龄20.0周）先熟悉一种色调（主波长515纳米）下的一种刺激，该刺激有两种不同形状（熊脸或兔子脸）中的一种，然后进行4种主要的测试比较，在这些比较中，熟悉的刺激与新刺激配对，新刺激具有熟悉或交替（新）的形状，且色调来自相同或不同类别（主波长分别为548和482纳米，与熟悉的色调同样不同）。婴儿仅在新类别色调中表现出对新刺激的偏好。另外40名婴儿（与实验组平均年龄相同）参与的对照任务排除了根据色调的不同亮度、色调偏好或无法区分形状对这种反应模式的其他解释。
