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ERIC Number: EJ1057420
Record Type: Journal
Publication Date: 2014-Sep
Pages: 21
Abstractor: As Provided
Reference Count: 46
ISSN: ISSN-0278-7393
Recognition Memory zROC Slopes for Items with Correct versus Incorrect Source Decisions Discriminate the Dual Process and Unequal Variance Signal Detection Models
Starns, Jeffrey J.; Rotello, Caren M.; Hautus, Michael J.
Journal of Experimental Psychology: Learning, Memory, and Cognition, v40 n5 p1205-1225 Sep 2014
We tested the dual process and unequal variance signal detection models by jointly modeling recognition and source confidence ratings. The 2 approaches make unique predictions for the slope of the recognition memory zROC function for items with correct versus incorrect source decisions. The standard bivariate Gaussian version of the unequal variance model predicts little or no slope difference between the source-correct and source-incorrect functions. We also developed a "bounded" version of this model that did not permit below-chance source discrimination in any region of the evidence space. The bounded version predicts that the source-correct function should have a lower slope than the source-incorrect function. A bivariate version of the dual process signal detection model can predict slope differences in either direction, but it must predict a u-shaped slope for items attributed to the correct source than items attributed to the incorrect source, and source zROC function if the source-correct slope is lower than the source-incorrect slope. Across 4 experiments, results consistently showed that the recognition memory zROC function had a lower the source zROC function for words recognized with high confidence was linear. Only the bounded version of the unequal variance model successfully predicted the full pattern of results.
American Psychological Association. Journals Department, 750 First Street NE, Washington, DC 20002. Tel: 800-374-2721; Tel: 202-336-5510; Fax: 202-336-5502; e-mail:; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: Higher Education; Postsecondary Education
Audience: N/A
Language: English
Sponsor: National Institute of Mental Health (DHHS/NIH)
Authoring Institution: N/A
Identifiers - Location: Massachusetts
Grant or Contract Numbers: R01 MH60274