000150283 001__ 150283 000150283 005__ 20251017144645.0 000150283 0247_ $$2doi$$a10.1037/a0023276 000150283 0248_ $$2sideral$$a141471 000150283 037__ $$aART-2011-141471 000150283 041__ $$aeng 000150283 100__ $$aLuna, Karlos 000150283 245__ $$aRegulation of memory accuracy with multiple answers: The plurality option. 000150283 260__ $$c2011 000150283 5060_ $$aAccess copy available to the general public$$fUnrestricted 000150283 5203_ $$aWe report two experiments that investigated the regulation of memory accuracy with a new regulatory mechanism: the plurality option. This mechanism is closely related to the grain-size option but involves control over the number of alternatives contained in an answer rather than the quantitative boundaries of a single answer. Participants were presented with a slideshow depicting a robbery (Experiment 1) or a murder (Experiment 2), and their memory was tested with five-alternative multiple-choice questions. For each question, participants were asked to generate two answers: a single answer consisting of one alternative and a plural answer consisting of the single answer and two other alternatives. Each answer was rated for confidence (Experiment 1) or for the likelihood of being correct (Experiment 2), and one of the answers was selected for reporting. Results showed that participants used the plurality option to regulate accuracy, selecting single answers when their accuracy and confidence were high, but opting for plural answers when they were low. Although accuracy was higher for selected plural than for selected single answers, the opposite pattern was evident for confidence or likelihood ratings. This dissociation between confidence and accuracy for selected answers was the result of marked overconfidence in single answers coupled with underconfidence in plural answers. We hypothesize that these results can be attributed to overly dichotomous metacognitive beliefs about personal knowledge states that cause subjective confidence to be extreme. (APA PsycInfo Database Record (c) 2016 APA, all rights reserved) 000150283 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttps://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 000150283 590__ $$a1.754$$b2011 000150283 591__ $$aPSYCHOLOGY, APPLIED$$b23 / 73 = 0.315$$c2011$$dQ2$$eT1 000150283 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000150283 700__ $$aHigham, Philip A. 000150283 700__ $$0(orcid)0000-0003-3642-5337$$aMartín-Luengo, Beatriz 000150283 773__ $$g17, 2 (2011), 148-158$$pJ. exp. psychol., appl.$$tJournal of experimental psychology. Applied$$x1076-898X 000150283 8564_ $$s373014$$uhttps://zaguan.unizar.es/record/150283/files/texto_completo.pdf$$yPostprint 000150283 8564_ $$s2079239$$uhttps://zaguan.unizar.es/record/150283/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000150283 909CO $$ooai:zaguan.unizar.es:150283$$particulos$$pdriver 000150283 951__ $$a2025-10-17-14:33:40 000150283 980__ $$aARTICLE