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. Author manuscript; available in PMC: 2009 Sep 2.
Published in final edited form as: Vision Res. 2007 May 17;47(14):1907–1923. doi: 10.1016/j.visres.2007.03.018

Table A1.

Results of fitting the weighted CoG model to the data from the mask condition (experiment 2a).

Leftward Rightward
Duration Model α Slope Int SD R2 L p Duration Model α Slope Int SD R2 L p
ML ML
400 ms W 0.95 1.23 137 36 0.54 656.8 400 ms W 0.98 1.03 −27 36 0.48 744.4
F 1.00 1.15 99 36 0.54 657.0 0.52 F 1.00 1.01 −16 36 0.48 744.5 1.00
F 0.50 1.22 131 47 0.23 690.5 <.001* F 0.50 0.96 11 46 0.14 781.1 <.001*
200 ms W 0.82 1.29 171 33 0.53 673.0 200 ms W 0.86 1.16 −107 32 0.48 750.3
F 1.00 0.97 19 34 0.50 676.6 <.01* F 1.00 0.95 −7 32 0.47 752.3 <.05*
F 0.50 1.30 172 40 0.29 700.7 <.001* F 0.50 1.09 −73 39 0.23 780.9 <.001*
100 ms W 0.83 1.12 88 37 0.41 639.6 100 ms W 0.86 1.26 −155 32 0.53 689.6
F 1.00 0.85 −43 38 0.39 641.2 0.07 F 1.00 1.02 −40 33 0.52 692.0 <.05*
F 0.50 1.18 117 43 0.21 657.5 <.001* F 0.50 1.13 −93 41 0.23 724.8 <.001*
SDK SDK
400 ms W 0.67 1.20 108 27 0.50 633.0 400 ms W 0.72 1.15 −77 31 0.38 699.7
F 1.00 0.70 −131 30 0.40 645.6 <.0001* F 1.00 0.69 141 33 0.31 707.4 <.0001*
F 0.50 1.25 129 29 0.43 642.1 <.001* F 0.50 1.08 −44 34 0.26 711.9 <.001*
200 ms W 0.76 0.95 −2 34 0.34 665.7 200 ms W 0.63 0.89 38 28 0.31 798.9
F 1.00 0.64 −148 34 0.30 669.0 <.01* F 1.00 0.46 244 30 0.20 811.6 <.0001*
F 0.50 0.95 2 36 0.22 676.5 <.001* F 0.50 0.86 54 29 0.28 803.2 <.025*
100 ms W 0.59 0.85 −53 32 0.23 696.9 100 ms W 0.48 0.89 42 33 0.26 618.5
F 1.00 0.37 −285 34 0.11 706.9 <.0001* F 1.00 0.30 325 37 0.08 632.3 <.0001*
F 0.50 0.83 −65 32 0.22 698.2 0.26 F 0.50 0.89 41 33 0.26 618.5 0.90
ES ES
400 ms W 0.82 1.00 22 42 0.27 583.3 400 ms W 1.00 0.85 46 35 0.40 757.3
F 1.00 0.76 −90 43 0.25 584.7 0.10 F 1.00 0.85 46 35 0.40 757.3 1.00
F 0.50 0.89 −24 46 0.15 591.8 <.001* F 0.50 0.87 38 42 0.14 784.7 <.001*
200 ms W 0.69 1.03 34 41 0.24 610.7 200 ms W 0.83 1.10 −66 41 0.36 666.2
F 1.00 0.61 −168 42 0.19 614.3 <.01* F 1.00 0.86 48 41 0.35 667.6 0.09
F 0.50 1.04 38 42 0.19 614.5 <.05* F 0.50 1.17 −98 45 0.22 679.2 <.001*
100 ms W 0.69 1.07 62 33 0.39 657.1 100 ms W 0.88 1.14 −84 38 0.39 648.3
F 1.00 0.66 −135 34 0.33 662.8 <.001* F 1.00 0.96 1 39 0.38 649.2 0.17
F 0.50 1.16 107 34 0.32 664.6 <.001* F 0.50 1.02 −24 44 0.18 667.3 <.001*

Model W is the model where α was free to vary.

Model F is a model where the value of α was fixed at either .5 or 1.0.

Slope and Int are the values of the slope and intercept of the given model (m and b in eq. A1).

SD is the root mean square error (RMSE) about the best fit line given by the model.

L the negative log of the maximum likelihood of the given model (eq. A2).

p values were obtained from testing the fit of Model W relative to the fits of two different versions of model F where α was fixed to be either .5 or 1.0 (df=1, see equation A4).

*

indicates Model W is a significantly better fit than Model F.