Infants' understanding of toy model-real exemplar relations was assessed through preferential looking and habituation tasks. Results from the preferential looking task suggest that 18-month toddlers are just beginning to demonstrate comprehension of symbolic relations between iconic models and their real object counterparts. Performance of 10- and 14-month-old infants in the preferential looking task did not improve when across-domain pairs of videos were used in place of within-domain pairs. Habituation task results indicated that 10-month-olds do not comprehend symbolic relations between miniature toy replicas and their "real" counterparts, but that such understanding begins to emerge by age 14 months. Interactions between symbolic processing and early lexical development are considered, as are methodological implications for the study of infant categorization.

中文翻译：

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婴儿将玩具复制品作为实物符号的理解

婴儿对玩具模型-真实范例关系的理解通过优先观察和习惯任务进行评估。优先观察任务的结果表明，18 个月大的幼儿才刚刚开始展示对标志性模型与其真实对象对应物之间的符号关系的理解。当使用跨域视频对代替域内视频对时，10 个月大和 14 个月大的婴儿在优先寻找任务中的表现没有改善。习惯任务的结果表明，10 个月大的孩子不理解微型玩具复制品与其“真实”对应物之间的象征关系，但这种理解在 14 个月大时开始出现。考虑了符号处理和早期词汇发展之间的相互作用，