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Starns, Jeffrey J.; Rotello, Caren M.; Ratcliff, Roger – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2012
Koen and Yonelinas (2010; K&Y) reported that mixing classes of targets that had short (weak) or long (strong) study times had no impact on zROC slope, contradicting the predictions of the encoding variability hypothesis. We show that they actually derived their predictions from a mixture unequal-variance signal detection (UVSD) model, which…
Descriptors: Evidence, Prediction, Study Habits, Models
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Jang, Yoonhee; Mickes, Laura; Wixted, John T. – Journal of Experimental Psychology: Learning, Memory, and Cognition, 2012
The slope of the z-transformed receiver-operating characteristic (zROC) in recognition memory experiments is usually less than 1, which has long been interpreted to mean that the variance of the target distribution is greater than the variance of the lure distribution. The greater variance of the target distribution could arise because the…
Descriptors: Research Design, Prediction, Recognition (Psychology), Memory