SOFTWARE TO CALCULATE MEASURES OF SENSITIVITY AND RESPONSE BIAS BASEDON DETECTION THEORY AND THRESHOLD THEORY

This paper describes software that calculates 11 measures of sensitivi ty and 13 measures of response bias. The functions defined in the prog ram can be stored as independent routines in a. program library and ca n thus be called from other programs. The main program tests parameter limitations, and the calculations remain, accurate below chance level . These measures are derived from Gaussian, logistic, and rectangular distributions. The bias measures are based on criterion location, crit erion location relative to sensitivity, or Likelihood ratio. The user is able to choose between different modes of output and two alternativ e ways to deal with extreme proportions. A brief description of the us e and tenability of each of the measures included.