The equations in the Experiment 1 section under the subheading “Results and Discussion” are incorrect. The first three paragraphs of that section, containing the corrected equations, are as follows:
We present the data corrected for the estimates of recollection and familiarity: We first calculated, for each participant, the proportion of Remember (R) and Know (K) responses by dividing a given response by the total number of non-guess responses, that is, by the total number of responses excluding guess responses. To illustrate, given that each experimental condition contained 20 items, the R proportion was calculated as: where R and G are the raw number of R and G responses. The subtraction of G responses from the total number of trials was performed after post-test debriefing revealed that G responses were mainly due to experimental noise. For example, participants typically responded with G when they pressed the "old" button by mistake, or when they could not decide when an item was old or new. Overall G rates were very small (M = .016, SD = .035 in the encoding-manipulation block; M = .038, SD = .071 in the retrieval-manipulation block), and were equally distributed over the experimental conditions (t(47) = 0.275, p = .785 in the encoding-manipulation block; F(3,141) = 0.828, p = .480 in the retrieval-manipulation block) (cf., ).
Then, R and K proportions were applied to the correction for the estimates of recollection and familiarity according to Yonelinas and Jacoby's correction formulas  . Recollection was estimated by the R proportion: Recollection = P(R) and familiarity was estimated by:
The raw proportions of R and K responses are presented in S1 Table. Effect sizes throughout the article were calculated as Cohen's d.
Citation: Rosenstreich E, Goshen-Gottstein Y (2015) Correction: Recollection-Based Retrieval Is Influenced by Contextual Variation at Encoding but Not at Retrieval. PLoS ONE10(7): e0134758. https://doi.org/10.1371/journal.pone.0134758
Published: July 31, 2015
Copyright: © 2015 Rosenstreich, Goshen-Gottstein. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited