Testing signal-detection models of yes/no and two-alternative forced-choice recognition memory.

Full Abstract

The current study compared 3 models of recognition memory in their ability to generalize across yes/no and 2-alternative forced-choice (2AFC) testing. The unequal-variance signal-detection model assumes a continuous memory strength process. The dual-process signal-detection model adds a thresholdlike recollection process to a continuous familiarity process. The mixture signal-detection model assumes a continuous memory strength process, but the old item distribution consists of a mixture of 2 distributions with different means. Prior efforts comparing the ability of the models to characterize data from both test formats did not consider the role of parameter reliability, which can be critical when comparing models that differ in flexibility. Parametric bootstrap simulations revealed that parameter regressions based on separate fits of each test type only served to identify the least flexible model. However, simultaneous fits of receiver-operating characteristic data from both test types with goodness-of-fit adjusted with Akaike's information criterion (AIC) successfully recovered the true model that generated the data. With AIC and simultaneous fits to real data, the unequal-variance signal-detection model was found to provide the best account across yes/no and 2AFC testing. (c) 2009 APA, all rights reserved.

Author information

Author/s: Jang, Yoonhee (Y); Wixted, John T (JT); Huber, David E (DE);

Affiliation: Department of Psychology, University of California, San Diego, La Jolla, CA 92093-0109, USA. yhjang(-atsign-)ucsd.edu

Grants: MH063993-04 (Agency:NIMH NIH HHS)

Journal and publication information

Publication Type: Journal Article; Research Support, N.I.H., Extramural

Journal: Journal of experimental psychology. General (J Exp Psychol Gen), published in United States. (Language: eng)

Reference: 2009-May; vol 138 (issue 2) : pp 291-306

Dates: Created 2009/04/28; Completed 2009/06/26;

PMID: 19397385, status: MEDLINE (last retrieval date: 6/26/2009, IMS Date: 26 Jun 2009 00:00:00)

Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.

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