On the analysis of psychometric functions: the Spearman-Kärber method.

  title={On the analysis of psychometric functions: the Spearman-K{\"a}rber method.},
  author={Jeff Miller and Rolf Ulrich},
  journal={Perception & psychophysics},
  volume={63 8},
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 more power to detect differences in these parameters across experimental conditions. Moreover, the… CONTINUE READING