Subject: Re: Dprime and false alarm rates From: Pawel Kusmierek <p.kusmierek(at)NENCKI.GOV.PL> Date: Mon, 17 Nov 2003 15:55:49 +0100Kala Lakshminarayanan said: > Has anyone had the > problem of having false alarm rates that exceed the hit rate sometimes and > not being able to calculate dprime? You may want to check the nonparametric sensitivity and responsivity measures, such as SI and RI (Frey and Collier 1973 Learn Motiv 4:327) or A' and B'' (Grier 1971 Psychol Bull 75:424, see also Stanislaw and Todorov 1999 Behav Res Meth Instr Comput 31:13). Pawel -- Pawel Kusmierek Nencki Institute of Experimental Biology ul. Pasteura 3 02-093 Warsaw, Poland phone: (+48 22) 659 85 71 ext. 388 or 379 fax: (+48 22) 822 53 42 email: p.kusmierek(at)nencki.gov.pl, pq(at)gazeta.pl