Threshold estimation in two-alternative forced-choice (2AFC) tasks: The Spearman-Kärber method
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چکیده
منابع مشابه
Threshold estimation in two-alternative forced-choice (2AFC) tasks: the Spearman-Kärber method.
The Spearman-Kärber method can be used to estimate the threshold value or difference limen in two-alternative forced-choice tasks. This method yields a simple estimator for the difference limen and its standard error, so that both can be calculated with a pocket calculator. In contrast to previous estimators, the present approach does not require any assumptions about the shape of the true unde...
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With computer simulations, we examined the performance of the Spearman-Kärber method for analyzing psychometric functions and compared this method with the standard technique of probit analysis. The Spearman-Kärber method was found to be superior in most cases. It generally yielded less biased and less variable estimates of the location and dispersion of a psychometric function, and it provided...
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ژورنال
عنوان ژورنال: Perception & Psychophysics
سال: 2004
ISSN: 0031-5117,1532-5962
DOI: 10.3758/bf03194898