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Feature Search

Model Summary

Model R R Square

Adjusted R

Square

Std. Error of the

Estimate

1 .022a .000 .000 476.217

a. Predictors: (Constant), Number of distractors

ANOVAb

Model Sum of Squares df Mean Square F Sig.

1 Regression 188998.321 1 188998.321 .833 .361a

Residual 4.023E8 1774 226782.312

Total 4.025E8 1775

a. Predictors: (Constant), Number of distractors

b. Dependent Variable: RT (ms)

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Conjunction Search

Model Summary

Model R R Square

Adjusted R

Square

Std. Error of the

Estimate

1 .504a

.254 .253 741.791

a. Predictors: (Constant), Number of distractors

ANOVAb

Model Sum of Squares df Mean Square F Sig.

1 Regression 3.319E8 1 3.319E8 603.183 .000a

Residual 9.762E8 1774 550254.015

Total 1.308E9 1775

a. Predictors: (Constant), Number of distractors

b. Dependent Variable: RT (ms)

Coefficientsa

Model

Unstandardized Coefficients Standardized Coefficients

t Sig.B Std. Error Beta

1 (Constant) 925.896 25.909 35.736 .000

Number of distractors 16.676 .679 .504 24.560 .000

a. Dependent Variable: RT (ms)

Distractor type

Feature Conjunctive

Presence ofTarget Presence ofTarget

Present Absent Present Absent

Mean Mean Mean Mean

RT (ms) 709 832 1154 1632

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Model Summary

Model

R

R Square

Adjusted R

Square

Std. Error of the

Estimate

Distractors_and_Target = Feature

Search and Target Present (Selected)

1 .000a

.000 -.001 412.930

a. Predictors: (Constant), Number of distractors

ANOVAb,c

Model Sum of Squares df Mean Square F Sig.

1 Regression 6.333 1 6.333 .000 .995a

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Coefficientsa,b

Model

Unstandardized Coefficients

Standardized

Coefficients

t Sig.B Std. Error Beta

1 (Constant) 708.622 20.397 34.741 .000

Number of distractors .003 .535 .000 .006 .995

a. Dependent Variable: RT (ms)

b. Selecting only cases for which Distractors_and_Target = Feature Search and Target Present

Model Summary

Model

R

R Square

Adjusted R

Square

Std. Error of the

Estimate

Distractors_and_Target = Feature

Search and Target Absent (Selected)

1 .039a

.002 .000 525.149

a. Predictors: (Constant), Number of distractors

ANOVAb,c

Model Sum of Squares df Mean Square F Sig.

1 Regression 374908.556 1 374908.556 1.359 .244a

Residual 2.443E8 886 275781.806

Total 2.447E8 887

a. Predictors: (Constant), Number of distractors

b. Dependent Variable: RT (ms)

c. Selecting only cases for which Distractors_and_Target = Feature Search and Target Absent

Coefficientsa,b

Model

Unstandardized Coefficients

Standardized

Coefficients

t Sig.B Std. Error Beta

1 (Constant) 809.455 25.940 31.205 .000

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Model Summary

Model

R

R Square

Adjusted R

Square

Std. Error of the

Estimate

Distractors_and_Target = Conjunction

Search and Target Present (Selected)

1 .444a

.197 .196 602.654

a. Predictors: (Constant), Number of distractors

ANOVAb,c

Model Sum of Squares df Mean Square F Sig.

1 Regression 78953944.016 1 78953944.016 217.389 .000a

Residual 3.218E8 886 363191.816

Total 4.007E8 887

a. Predictors: (Constant), Number of distractors

b. Dependent Variable: RT (ms)

c. Selecting only cases for which Distractors_and_Target = Conjunction Search and Target Present

Coefficientsa,b

Model

Unstandardized Coefficients

Standardized

Coefficients

t Sig.B Std. Error Beta

1 (Constant) 831.501 29.769 27.932 .000

Number of distractors 11.503 .780 .444 14.744 .000

a. Dependent Variable: RT (ms)

b. Selecting only cases for which Distractors_and_Target = Conjunction Search and Target Present

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Model Summary

Model

R

R Square

Adjusted R

Square

Std. Error of the

Estimate

Distractors_and_Target = Conjunction

Search and Target Absent (Selected)

1 .595a

.354 .353 766.651

a. Predictors: (Constant), Number of distractors

ANOVAb,c

Model Sum of Squares df Mean Square F Sig.

1 Regression 2.849E8 1 2.849E8 484.720 .000a

Residual 5.207E8 886 587753.638

Total 8.056E8 887

a. Predictors: (Constant), Number of distractors

b. Dependent Variable: RT (ms)

c. Selecting only cases for which Distractors_and_Target = Conjunction Search and Target Absent

Coefficientsa,b

Model

Unstandardized Coefficients

Standardized

Coefficients

t Sig.B Std. Error Beta

1 (Constant) 1020.291 37.869 26.942 .000

Number of distractors 21.850 .992 .595 22.016 .000

a. Dependent Variable: RT (ms)

b. Selecting only cases for which Distractors_and_Target = Conjunction Search and Target Absent

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Descriptives - RT (ms)

N Mean Std. Deviation Std. Error

95% Confidence Interval for Mean

Minimum MaximumLower Bound Upper Bound

Feature Search and Target Present 888 708.71 412.697 13.849 681.53 735.89 328 4793

Feature Search and Target Absent 888 831.65 525.256 17.626 797.05 866.24 359 4270

Conjunction Search and Target Present 888 1153.57 672.157 22.556 1109.30 1197.84 391 5524

Conjunction Search and Target Absent 888 1632.09 953.038 31.982 1569.32 1694.86 391 6582

Total 3552 1081.51 760.698 12.764 1056.48 1106.53 328 6582

Distractor type

Feature Conjunctive

Target Present Target Absent Target Present Target Absent

y-intercept slope y-intercept slope y-intercept slope y-intercept slope

Coefficients 708.6 .003 809.5 .793 831.5 11.5 1020.3 21.9

T (Sig) 34.7 (.000) .006 (.995) 31.2 (.000) 1.2 (.244) 27.9 (.000) 14.7 (.000) 26.9 (.000) 22.0 (.000)

ANOVA - RT (ms)

Sum of Squares df Mean Square F Sig.

Between Groups 4.527E8 3 1.509E8 334.129 .000Within Groups 1.602E9 3548 451572.151

Total 2.055E9 3551