Evidence for a memory threshold in second-choice recognition memory responses Export

@article{citeulike:5081789, abstract = {10.1073/pnas.0905505106 A fundamental question in the study of cognition is whether memory strength varies continuously or whether memories sometimes fall below a threshold and fail completely. Previous studies examining this question have relied exclusively on 1 method—receiver operating characteristics—so in the current study, we addressed this issue by using a completely different approach. We tested memory for single items and for arbitrary associations (e.g., memory for random word pairs) by using a 4-alternative forced-choice test in which subjects either made a single choice or a first and a second choice. In item recognition, single- and second-choice scores were directly related, as expected if a continuous strength signal supported performance. In contrast, in associative recognition, single- and second-choice scores were found to be unrelated, as predicted by high-threshold theories. However, when the word pairs were encoded as single compound words rather than arbitrary associations, associative recognition appeared to rely more on a continuous strength process. The results support memory models that include both a continuous familiarity process and a threshold recollection process.}, author = {Parks, Colleen M. and Yonelinas, Andrew P.}, citeulike-article-id = {5081789}, citeulike-linkout-0 = {http://dx.doi.org/10.1073/pnas.0905505106}, citeulike-linkout-1 = {http://www.pnas.org/content/early/2009/06/26/0905505106.abstract}, citeulike-linkout-2 = {http://www.pnas.org/content/early/2009/06/26/0905505106.full.pdf}, citeulike-linkout-3 = {http://view.ncbi.nlm.nih.gov/pubmed/19564612}, citeulike-linkout-4 = {http://www.hubmed.org/display.cgi?uids=19564612}, day = {29}, doi = {10.1073/pnas.0905505106}, journal = {Proceedings of the National Academy of Sciences}, keywords = {dpsd, memory, recognition}, month = {June}, posted-at = {2009-07-17 00:09:09}, priority = {2}, title = {Evidence for a memory threshold in second-choice recognition memory responses}, url = {http://dx.doi.org/10.1073/pnas.0905505106}, year = {2009} }

TY - JOUR ID - citeulike:5081789 L3 - citeulike-article-id:5081789 N2 - 10.1073/pnas.0905505106 A fundamental question in the study of cognition is whether memory strength varies continuously or whether memories sometimes fall below a threshold and fail completely. Previous studies examining this question have relied exclusively on 1 method—receiver operating characteristics—so in the current study, we addressed this issue by using a completely different approach. We tested memory for single items and for arbitrary associations (e.g., memory for random word pairs) by using a 4-alternative forced-choice test in which subjects either made a single choice or a first and a second choice. In item recognition, single- and second-choice scores were directly related, as expected if a continuous strength signal supported performance. In contrast, in associative recognition, single- and second-choice scores were found to be unrelated, as predicted by high-threshold theories. However, when the word pairs were encoded as single compound words rather than arbitrary associations, associative recognition appeared to rely more on a continuous strength process. The results support memory models that include both a continuous familiarity process and a threshold recollection process. JF - Proceedings of the National Academy of Sciences TI - Evidence for a memory threshold in second-choice recognition memory responses KW - dpsd KW - memory KW - recognition AU - Parks, Colleen AU - Yonelinas, Andrew PY - 2009/06/29/ UR - http://dx.doi.org/10.1073/pnas.0905505106 ER -