When bias analysis has been requested in one or more Model= statements, then a secondary analysis is performed for each model with bias interactions ("B") specified.

 

Bias/Interaction analysis specified by Model: ?B,?B,?,CREATIVITY

 

There are as many bias analyses as there are Model= statements with "B"s or that you request from the "Output Tables" menu.

 

There are empirically 21 Bias terms

 

There is one term for each element combination from the two facets.

 

 

Table 9.1  Bias Iteration Report.

 

Bias/Interaction: 1. Senior scientists, 2. Junior Scientists

 

There are empirically 14 Bias terms

+-----------------------------------------------------------+

| Iteration      Max. Score Residual      Max. Logit Change |

|             Elements    %  Categories   Elements    Cells |

|-----------------------------------------------------------|

| BIAS   1      9.8439  24.6                -.8196       14 |

| BIAS   2     -1.7060  -4.3                -.2122       11 |

| BIAS   3      -.2214   -.6                -.0336        7 |

| BIAS   4      -.0051    .0                -.0008        0 |

+-----------------------------------------------------------+

 

 

Table 9.1  Bias Iteration Report

Bias/Interaction: 1. Senior scientists, 2. Junior Scientists

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There are empirically 21 Bias terms

Iteration 1   Largest Residuals  |----------Score------------|   logit Measure

Model:1. Senior scientists, No.   Raw  Expected Residual Resd%  Value    Change

>=============================================================================<

2=Brahe 5=Edward             14      9     22.0    -13.0 -144.   1.000   -1.000

Iteration    1  BIAS                       max.=   -13.0 -144.     max.= -1.000

 

|

2 more Bias iterations

|

 

Iteration 4   Largest Residuals  |----------Score------------|   logit Measure

Model:1. Senior scientists, No.   Raw  Expected Residual Resd%  Value    Change

>=============================================================================<

2=Brahe 5=Edward             14      9      9.0       .0    .0   1.267     .000

Iteration    4  BIAS                       max.=      .0    .0     max.=   .000

 

 

Column headings have the following meanings:

Model:= Specification of bias model, reported over the number and label of each element interacting to estimate a bias term.

No.= Sequence number of bias term.

 

Score

Raw= Observed integer score for this interaction of elements.

Expected= Score expected based on current bias estimate.

Residual= Difference between observed Score and Expected score

 

Logit Measure

Value= Revised estimate of bias in log-odds units (logits).

Change= Change in logit bias estimate from logit estimate of the previous iteration.

 

Estimate mean =mean value of the bias estimates for this model, usually near 0.0.

        S.D.=sample standard deviation of the estimates, which is not constrained to any value.

Count =number of reportable bias estimates

max.=Is the maximum change or residual for any element.

Iteration=The number of times BIAS has been applied to the data.

BIAS=A Newton-Raphson, residual-score to logit, estimation routine

 

Fit statistics are computed for the bias terms, and then results are reported:

 

Calculating Bias fit statistics

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Table 11.1  Bias/Interaction Measurement Summary

Table 12.1  Bias/Interaction Summary Report

Table 13.1.1  Bias/Interaction Report (arranged by mN)

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Table 13.1.2  Bias/Interaction Report (arranged by 0fN)

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Press Ctrl+F to stop Table 14 bias/interaction reporting.

Tables 14: There are 21 pairwise terms for 1. Senior scientists

Table 14.1.1.1  Bias/Interaction Pairwise Report (arranged by mN)

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Table 14.1.2.1  Bias/Interaction Pairwise Report (arranged by 0fN)

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Tables 14: There are 84 pairwise terms for 2. Junior Scientists

Table 14.1.1.2  Bias/Interaction Pairwise Report (arranged by mN)

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Table 14.1.2.2  Bias/Interaction Pairwise Report (arranged by 0fN)

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