01403nam 2200385 450 991070357870332120150129103451.0(CKB)5470000002431911(OCoLC)900967563(EXLCZ)99547000000243191120150129j197911 ua 0engurbn|||||||||rdacontentrdamediardacarrierA comparison of expert ratings of task difficulty with an independent criterion /David L. Ryan-JonesAlexandria, Virginia :U.S. Army Research Institute for the Behavioral and Social Sciences,November 1979.1 online resource (ix, 10 pages)Technical report ;418Title from title screen (viewed Jan. 14, 2015)."ARI Field Unit, USAREUR.""November 1979.""Army project number 2Q762722A764."Includes bibliographical references (page 8).Job analysisJob analysis.Ryan-Jones David L.1389453U.S. Army Research Institute for the Behavioral and Social Sciences.ARI Field Unit, USAREUR,GPOGPOBOOK9910703578703321A comparison of expert ratings of task difficulty with an independent criterion3441014UNINA