"Testing a Poisson counter model for visual identification of briefly presented, mutually confusable single stimuli in pure accuracy tasks": Correction to Kyllingsbæk, Markussen, and Bundesen (2012)

TY - JOUR

T1 - "Testing a Poisson counter model for visual identification of briefly presented, mutually confusable single stimuli in pure accuracy tasks": Correction to Kyllingsbæk, Markussen, and Bundesen (2012)

AU - Nielsen, Carsten Søren

AU - Kyllingsbæk, Søren

AU - Markussen, Bo

AU - Bundesen, Claus

PY - 2015

Y1 - 2015

N2 - The article “Testing a Poisson Counter Model for Visual Identification of Briefly Presented, Mutually Confusable Single Stimuli in Pure Accuracy Tasks” by Søren Kyllingsbæk, Bo Markussen and Claus Bundesen (Journal of Experimental Psychology: Human Perception and Performance, 2012, Vol. 38, No. 3, pp. 628–642. http://dx.doi.org/10.1037/a0024751) used a computational shortcut (Equation A5) that strongly reduced the time needed to fit the Poisson counter model to experimental data. Unfortunately, the computational shortcut built on an approximation that was not well-founded in the Poisson counter model. To measure the actual deviation, the authors refitted both the computational shortcut and the Poisson counter model (Equations A1-A4) to the experimental data reported in the article. The Poisson counter model fits did, fortunately, not deviate noticeably from those produced by the computational shortcut, nor did they invalidate any conclusions derived. The authors, however, still recommend that the Poisson counter model or a well-founded computational shortcut should be used in a fitting routine.A more detailed description of this correction that shows why the computational shortcut is not well-founded, and reports the refits, as well as a proposal for a well-founded computational shortcut can be found at http://dx.doi.org/10.1037/xhp0000037.suppWe are grateful to Carsten S. Nielsen for bringing this point to our attention and for working with the authors of this article to prepare the supplementary material that supports our new understanding. Please direct any questions regarding this material to Carsten S. Nielsen, Department of Psychology, University of Copenhagen, Øster Farimagsgade 2A, DK-1353, Copenhagen K, Denmark, E-mail: [email protected]

AB - The article “Testing a Poisson Counter Model for Visual Identification of Briefly Presented, Mutually Confusable Single Stimuli in Pure Accuracy Tasks” by Søren Kyllingsbæk, Bo Markussen and Claus Bundesen (Journal of Experimental Psychology: Human Perception and Performance, 2012, Vol. 38, No. 3, pp. 628–642. http://dx.doi.org/10.1037/a0024751) used a computational shortcut (Equation A5) that strongly reduced the time needed to fit the Poisson counter model to experimental data. Unfortunately, the computational shortcut built on an approximation that was not well-founded in the Poisson counter model. To measure the actual deviation, the authors refitted both the computational shortcut and the Poisson counter model (Equations A1-A4) to the experimental data reported in the article. The Poisson counter model fits did, fortunately, not deviate noticeably from those produced by the computational shortcut, nor did they invalidate any conclusions derived. The authors, however, still recommend that the Poisson counter model or a well-founded computational shortcut should be used in a fitting routine.A more detailed description of this correction that shows why the computational shortcut is not well-founded, and reports the refits, as well as a proposal for a well-founded computational shortcut can be found at http://dx.doi.org/10.1037/xhp0000037.suppWe are grateful to Carsten S. Nielsen for bringing this point to our attention and for working with the authors of this article to prepare the supplementary material that supports our new understanding. Please direct any questions regarding this material to Carsten S. Nielsen, Department of Psychology, University of Copenhagen, Øster Farimagsgade 2A, DK-1353, Copenhagen K, Denmark, E-mail: [email protected]

U2 - 10.1037/xhp0000037

DO - 10.1037/xhp0000037

M3 - Journal article

C2 - 25822582

SN - 0096-1523

VL - 41

SP - 355

JO - Journal of Experimental Psychology: Human Perception and Performance

JF - Journal of Experimental Psychology: Human Perception and Performance

IS - 2

ER -