期刊
PSYCHOLOGICAL REVIEW
卷 113, 期 1, 页码 148-154出版社
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0033-295X.113.1.148
关键词
redundant signals; race model inequality; negative dependence
An inequality by J. O. Miller (1982) has become the standard tool to test the race model for redundant signals reaction times (RTs), as an alternative to a neural summation mechanism. It stipulates that the RT distribution function to redundant stimuli is never larger than the sum of the distribution functions for 2 single stimuli. When many different experimental conditions are to be compared, a numerical index of violation is very desirable. Widespread practice is to take a certain area with contours defined by the distribution functions for single and redundant stimuli. Here this area is shown to equal the difference between 2 mean RT values. This result provides an intuitive interpretation of the index and makes it amenable to simple statistical testing. An extension of this approach to 3 redundant signals is presented.
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