After publication the authors realized that in the study by Lamy, Darnell, Levi and Bublil (2018) there were two errors. (1) In Experiment 1, in Figure 3 and Table 2, the compatibility effects on the accuracy measure were mistakenly copy-pasted from the validity effects and therefore did not match the average accuracy rates reported in the text and there was a typo on p.8. The corrected Figure 3, Table 2 and text are provided below. (2) In Experiment 2, there was an error in the exploratory analyses because the computation of the compatibility effect was wrong. This error did not alter the conclusions of the paper but had an impact on the following parts of the article. The corrected text, table and figures are provided below.1
Page 8, Figure 3.
Page 8, Table 2.
Page 8, When distractor difficulty was mixed, the interaction was significant, F(1, 23) = 10.4, p = .0038, η2p = .31, indicating that the compatibility effect was larger when the cued distractor was difficult, 50 ms, F(1, 23) = 13.5, p = .0013, η2p = .37 than when it was easy, –2 ms, F < 1.
Page 11, results in the section entitled Exploratory analyses: compatibility effects.
Reaction times. The main effect of cued distractor difficulty was significant, F(1, 22) = 71.8, p < .0001, η2p = .77, whereas the main effects of compatibility and search type were not, F < 1 and F(1, 22) = 3.11, p = .09, η2p = .12, respectively. The three-way interaction, between cued distractor difficulty, search type and compatibility was significant, F(1, 22) = 7.59, p = .01, η2p = .26. Follow-up comparisons revealed no compatibility effect when the cued distractor was difficult, in either the fixed- or the mixed-difficulty search, –3 ms and 7 ms, respectively, both Fs < 1. When the cued distractor was easy, the compatibility effect was positive in the fixed-difficulty search, 11 ms, F(1, 22) = 6.53, p = .02, η2p = .23 and negative in the mixed-difficulty search, –16 ms, F(1, 22) = 5.37, p = .03, η2p = .20.
Accuracy. Only the three-way interaction approached significance, F(1, 22) = 3.48, p =.08, η2p = .14. None of the paired comparisons reached significance.
Page 11, Table 4.
p.12, discussion of Experiment 2, second paragraph summarizing the compatibility effects.
Compatibility effects (i.e., better performance when the responses associated with the cued distractor and target were compatible than when they were incompatible) were very weak and inconsistent in this experiment. There was no compatibility effect when the difficult distractor was cued. Inconsistent effects emerged in the easy distractor condition. Such absence of compatibility effects in this experiment relative to Experiment 1 is likely to result from the much weaker location effect (i.e., better performance when the target appeared at the cued location than at a non-cued location) associated with the abrupt onset cue. While a location effect was observed in all conditions in Experiment 1, it was found only in the all-difficult condition in Experiment 2, and was much smaller than in the all-difficult condition of Experiment1 (26 ms vs. 121 ms, respectively).
p.13, General Discussion, penultimate paragraph of the section entitled: “A re-evaluation of the attentional dwelling hypothesis”.
Finally, the dwelling hypothesis does not explain the full pattern of results that arose from exploratory analyses of the compatibility effect, in particular, why a compatibility effect was associated with the difficult distractor on trials in which an easy distractor was cued in the mixed-difficulty search condition of Experiment 1.
p.14, General Discussion, 2nd paragraph of the section entitled: “Contradiction with the findings reported by Zivony and Lamy (in press)”.
The present findings challenge these conclusions because we found instances of compatibility effects following irrelevant-color onset cues, namely, in the mixed-difficulty search condition of Experiment 1.
The corrected data file can be found at https://doi.org/10.6084/m9.figshare.7770941.v2
1The mean compatibility effects on RTs and accuracy presented in the graphs and tables below were calculated per condition of cued distractor difficulty and search type. The mean compatibility effects across each of these factors reported in the text original manuscript (e.g., on page 7) do not correspond to the arithmetic average of the relevant cells because they factor in the imbalance in the number of trials in the different conditions. For instance, in the mixed-difficulty condition, there were two easy distractors and only one difficult distractor. Thus, the compatibility effect from easy distractors had more weight than the compatibility effect from difficult distractors in the compatibility effect reported for the fixed- vs. mixed search (across conditions of cued distractor difficulty).
The authors have no competing interests to declare.
Lamy, D., Darnell, M., Levi, A., & Bublil, C. (2018). Testing the Attentional Dwelling Hypothesis of Attentional Capture. Journal of Cognition, 1(1), 43. DOI: https://doi.org/10.5334/joc.48