How and when infants and young children begin to develop emotion categories is not yet well understood. Research has largely treated the learning problem as one of identifying perceptual similarities among exemplars (typically posed, stereotyped facial configurations). However, recent meta-analyses and reviews converge to suggest that emotion categories are abstract, involving high-dimensional and situationally variable instances. In this paper we consult research on the development of abstract object categorization to guide hypotheses about how infants might learn abstract emotion categories because the two domains present infants with similar learning challenges. In particular, we consider how a developmental cascades framework offers opportunities to understand how and when young children develop emotion categories.

中文翻译：

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发展对情绪类别的理解：来自对象的教训

婴幼儿如何以及何时开始发展情绪类别尚不清楚。研究在很大程度上将学习问题视为识别样本之间的感知相似性（通常是摆出姿势、刻板的面部结构）。然而，最近的元分析和评论一致表明，情绪类别是抽象的，涉及高维和情境可变的实例。在本文中，我们参考了抽象对象分类发展的研究，以指导关于婴儿如何学习抽象情感类别的假设，因为这两个领域给婴儿带来了相似的学习挑战。特别是，我们考虑了发展级联框架如何提供机会来了解幼儿如何以及何时发展情感类别。