Practice increases the efficiency of evidence accumulation in perceptual choice
Practice increases the efficiency of evidence accumulation in perceptual choice
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DOI：
10.1037/0096-1523.31.2.289
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发表时间：
2005-04-01
影响因子：
2.1
通讯作者：
Heathcote, A
中科院分区：
文献类型：
--
作者：
Brown, S;Heathcote, A
大多数选择反应时间的模型都是基于随着时间的推移而积累的证据。这些模型之间的一个根本区别在于每个证据是相等加权（无损累积）还是不等加权（泄漏累积）。作者测试了一个来自A. Heathcote和S.布朗（2002）的自我激励专家竞争者（SEEXC）模型的技能获取：证据积累变得越来越少泄漏与实践。这一假设得到了以下观察结果的支持：启动刺激的效果随着练习而增加。作者使用元对比掩蔽启动，这不能有意识地区分大多数参与者，以避免与有意识的策略变化相关的方法学问题。实践规律在数据中的表现形式也与SEEXC模型一致。
Most models of choice response time base decisions on evidence accumulated over time. A fundamental distinction among these models concerns whether each piece of evidence is equally weighted (lossless accumulation) or unequally weighted (leaky accumulation). The authors tested a hypothesis derived from A. Heathcote and S. Brown's (2002) self-exciting expert competitor (SEEXC) model of skill acquisition: that evidence accumulation becomes less leaky with practice. The hypothesis was supported by observation that the effects of prime stimuli increased with practice. The authors used metacontrast masked primes, which could not be consciously discriminated by most participants, to avoid methodological problems associated with conscious strategy changes. The form of the law of practice in the data is also shown to be consistent with the SEEXC model.