Clifford Colin W G, Arabzadeh Ehsan, Harris Justin A
School of Psychology, The University of Sydney, Sydney, NSW 2006, Australia.
Trends Cogn Sci. 2008 Feb;12(2):54-8. doi: 10.1016/j.tics.2007.11.009.
It has recently been argued that post-decision wagering provides an objective measure of awareness. We critically evaluate this claim, emphasizing the distinction between performance without awareness and a reluctance to gamble in full awareness of weak sensory evidence. We address two key methodological issues. The first is the design of the pay-off matrix to reward a strategy of wagering that reflects the strength of sensory evidence. The second is the use of signal detection theory to analyze the resulting data. We argue that proper treatment of these issues is essential if post-decision wagering is to prove valuable in validating claims of perception without awareness in normal subjects and neuropsychological patients.
最近有人认为，决策后下注提供了一种意识的客观测量方法。我们对这一说法进行了批判性评估，强调了无意识表现与在充分意识到微弱感官证据的情况下不愿下注之间的区别。我们讨论了两个关键的方法学问题。第一个是收益矩阵的设计，以奖励反映感官证据强度的下注策略。第二个是使用信号检测理论来分析所得数据。我们认为，如果决策后下注要在验证正常受试者和神经心理学患者无意识感知的说法方面证明有价值，正确处理这些问题至关重要。
