Flexible and context-dependent categorization by eighteen-month-olds
Flexible and context-dependent categorization by eighteen-month-olds
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DOI：
10.1111/j.1467-8624.2007.00983.x
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发表时间：
2007-01-01
影响因子：
4.6
通讯作者：
Tan, Seok Hui
中科院分区：
文献类型：
--
作者：
Mareschal, Denis;Tan, Seok Hui
100个18个月大的婴儿接受了连续触摸和4种不同启动情境的测试，这些启动情境使用的是一组玩具，这些玩具可以同时在基本或整体层面上进行分类。导出了任意类别的期望平均序列长度作为触摸次数的函数的精确表达式，并使用有限混合模型分析方法来探索分类中的个体变异性。幼儿可以灵活地进行分类，并根据先验启动自发地选择分类水平。知觉变异性作为婴儿随后分类水平的预测因子出现。婴儿还能够同时将物体分类为基本类别和全局类别的成员。
One hundred 18-month-olds were tested using sequential touching and following 4 different priming contexts using sets of toys that could be simultaneously categorized at either the basic or global level. An exact expression of the expected mean sequence length for arbitrary categories was derived as a function of the number of touches made, and a finite mixture model analytic method was also used to explore individual variability in categorization. Toddlers could categorize flexibly and spontaneously selected the level of categorization as a function of the prior prime. Perceptual Variability emerged as a predictor of the level at which infants subsequently categorized. The infants were also able to classify objects as members of both basic- and global-level categories simultaneously.