Appendix: ANCOVA (RBFAC-22): Time Covariate

SPSS Output

      

Note: there are 2 levels for the TASKS effect. Average tests are identical

to the univariate tests of significance.

 

Note: there are 2 levels for the TOOLS effect. Average tests are identical

to the univariate tests of significance.

 

 

* * * * * * A n a l y s i s o f V a r i a n c e * * * * * *

 

20 cases accepted.

0 cases rejected because of out-of-range factor values.

1 case rejected because of missing data.

1 non-empty cell.

1 design will be processed.

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* * * * * * A n a l y s i s o f V a r i a n c e -- design 1 * * * * * *

Tests of Between-Subjects Effects.

Tests of Significance for T1 using UNIQUE sums of squares

Source of Variation SS DF MS F Sig of F
WITHIN+RESIDUAL 4935.24 18 274.18
REGRESSION .00 1 .00 .00 .999
CONSTANT 125648.93 1 125648.93 458.27 .000

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Regression analysis for WITHIN+RESIDUAL error term

--- Individual Univariate .9500 confidence intervals

Dependent variable .. T1

COVARIATE B Beta Std. Err. t-Value Sig. of t
T5 -.00013 -.00024 .128 -.001 .999
COVARIATE Lower -95% CL- Upper
T5 -.269 .269

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* * * * * * A n a l y s i s o f V a r i a n c e -- design 1 * * * * * *

Tests involving 'TASKS' Within-Subject Effect.

Tests of Significance for T2 using UNIQUE sums of squares

Source of Variation SS DF MS F Sig of F
WITHIN+RESIDUAL 5460.46 18 303.36
REGRESSION 729.28 1 729.28 2.40 .138
TASKS 325.47 1 325.47 1.07 .314

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Regression analysis for WITHIN+RESIDUAL error term

--- Individual Univariate .9500 confidence intervals

Dependent variable .. T2

COVARIATE B Beta Std. Err. t-Value Sig. of t
T6 .52581 .34325 .339 1.550 .138
COVARIATE Lower -95% CL- Upper
T6 -.187 1.238

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* * * * * * A n a l y s i s o f V a r i a n c e -- design 1 * * * * * *

Tests involving 'TOOLS' Within-Subject Effect.

Tests of Significance for T3 using UNIQUE sums of squares

Source of Variation SS DF MS F Sig of F
WITHIN+RESIDUAL 3153.72 18 175.21
REGRESSION 674.42 1 674.42 3.85 .065
TOOLS 307.00 1 307.00 1.75 .202

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Regression analysis for WITHIN+RESIDUAL error term

--- Individual Univariate .9500 confidence intervals

Dependent variable .. T3

COVARIATE B Beta Std. Err. t-Value Sig. of t
T7 .86184 .41973 .439 1.962 .065
COVARIATE Lower -95% CL- Upper

T7 -.061 1.785

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* * * * * * A n a l y s i s o f V a r i a n c e -- design 1 * * * * * *

Tests involving 'TASKS BY TOOLS' Within-Subject Effect.

Tests of Significance for T4 using UNIQUE sums of squares

Source of Variation SS DF MS F Sig of F
WITHIN+RESIDUAL 1551.68 18 86.20
REGRESSION 48.95 1 48.95 .57 .461
TASKS BY TOOLS 73.89 1 73.89 .86 .367

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Regression analysis for WITHIN+RESIDUAL error term

--- Individual Univariate .9500 confidence intervals

Dependent variable .. T4

COVARIATE B Beta Std. Err. t-Value Sig. of t
T8 .27134 .17488 .360 .754 .461
COVARIATE Lower -95% CL- Upper
T8 -.485 1.028

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