體驗區
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| 篇名 |
感数--它能告诉我们什么?
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| 並列篇名 |
Subitizing, What Can It Tell Us?
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| 作者 |
徐晓东
、刘昌
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| 中文摘要 |
研究者在列举任务中发现，被试对3个以内项目的报告既快又准确(一般称之为[感数])，而对3个以上项目的报告既慢又容易出错误([计数])，由此他们提出感数和计数属于两种不同性质的加工过程，一系列行为数据的反应时和正确率指标支持了这一假设。此外，最近的脑成像、电生理研究还发现，感数和计数在对注意的需求上同样存在着分离--感数无需注意，只有计数过程才需注意的参与。在此基础上，研究者从不同角度提出了一些解释感数现象的理论。
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| 英文摘要 |
During the process of enumeration, researchers found that enumeration of three or fewer objects is very fast and accurate (often called [subitizing]), but gets slower and more error prone for more than three items ([counting]). Thereby they suggested that [subitizing] and [counting] are two qualitatively separable processes, a number of behavioral reaction time and accuracy supported their hypothesis. Moreover, recent neruoimage and electrophysiology results showed that [subitizing] and [counting] are also separable in attentional requirements. that is, [subitizing]can happen without attention, while [counting]must rely on attention. Based on these findings, many theories have been proposed to account for subitizing phenomenon.
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| 頁次 |
50-56
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| 關鍵詞 |
感数
、计数
、注意
、FINST理论
、subitizing
、counting
、attention
、FINST theory
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| 卷期 |
15:1
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| 日期 |
200701
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| 刊名 |
心理科學進展
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| 出版單位 |
中國科學院心理研究所
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