Making Use of Response Times in Standardized Tests: Are Accuracy and Speed Measuring the Same Thing? |
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ability estimation ability Ø accuracy and response accuracy and speed Admission Council LAW analyses analysis of covariance asymptotic accuracy characterizing test cognitive psychology depicted in Figure explained uniquely grand mean item differences item difficulty item easiness zij Item Response Theory item slowness Law School Admission little variability log response lognormally distributed low-scoring test takers lower asymptote maximum likelihood minimal processing observed response processing speed psychometric Psychometricians quantitative test reasoning test reflect rapid guessing regression relative item easiness respond correctly response accuracy response speed response-accuracy submodel response-speed submodel response-time distributions Schnipke and Scrams School Admission Council solution strategies speed and accuracy speed-accuracy relationship speed-accuracy tradeoff functions Standardized Tests strategy selection test speededness test taker ability test taker differences test taker slowness testing context Thissen's total variability uniquely by item uniquely by relative uniquely by test unobtrusively during operational unrelated r²=.02 upper asymptote variability in log verbal and quantitative verbal test