I am looking for (or interested in writing) a function that calculates Az, an alternative measure of discriminability from SDT (alternative to d', Az). I have written my own functions for d', A', B"d, and am aware of the 'sdtalt' package, but I have yet to find a way to calculate Az, since it require the phi operator.
For a relevant paper/discussion (and formula), please see Verde and McMillian, 2006 (Measures of sensitivity based on a single hit rate and false alarm rate: The accuracy, precision, and robustness of d', Az, and Az) Any help on this would be greatly appreciated! David Dobolyi Graduate Student Cognitive Psychology University of Virginia -- View this message in context: http://r.789695.n4.nabble.com/Calculate-Az-A-sub-z-with-R-tp3668893p3668893.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
