IPEXTREME= placement of extreme scores on maps

IPEXTREME= Yes	place persons and items with extremes scores at the extreme top and bottom in Tables 1, 12, 16.
IPEXTREME= No	place persons and items with extremes scores at their estimated measures in Tables 1, 12, 16.

Example 1: Exam1.txt. Table 1.0

IPEXTREME=Yes. Persons and items with extreme scores (here in red) placed at the extreme ends of the map.

Here, T1MWE=No. Items and persons with extreme scores are omitted from the Mean computation. Notice that the mean item difficulty is 0. UEXTREME=No. Items with extreme scores not included in UIMEAN=0.

MEASURE KID - MAP - TAP

5 + 1-3- 1-4- 1-4- 4-1-

4 T+

Ric Sus |S 1-4-

3 Fra +

2 Ber Bet Els Tho S+ 1-3- 1-4-

1 Bri Car Dav Joe Zul + 1-3-

0 M+M <- UIMEAN=0 UEXTREME=No T1MWE=No

Ann Aud Bar Dor Jam Kim Lin Mik Ron Tra Wal Wil |

-1 +

Jan Lis Rod | 2-4-

-2 Bre Pet S+

| 1-4-

-3 Ada Ric +

Bla Mar |S 1-3- 3-4-

-4 T+ 1-4- 2-1-

Don | 1-3-

-5 Hel + 1-2- 1-4 2-3

IPEXTREME=No. Persons and items with extreme scores (here in red) placed at their estimated measures on the map.

Here, T1MWE=Yes. Items and persons with extreme scores are included in the Mean computation. Notice that including the extreme items has moved the mean item difficulty to -1 logit. UEXTREME=No. Items with extreme scores not included in UIMEAN=0.

MEASURE KID - MAP - TAP

6 + 4-1-3-

5 + 1-3-2- 1-4-2- 1-4-3-

4 T+

Ric Sus |S 1-4-2-

3 Fra +

2 Ber Bet Els Tho S+ 1-3-2- 1-4-3-

1 Bri Car Dav Joe Zul + 1-3-1-

0 +

Ann Aud Bar Dor Jam Kim Lin Mik Ron Tra Wal Wil M|

-1 +M <- UIMEAN=0 UEXTREME=No T1MWE=Yes

Jan Lis Rod | 2-4-3-

-2 Bre Pet +

S| 1-4-2-

-3 Ada Ric +

Bla Mar | 1-3-2- 3-4-1

-4 + 1-4-3- 2-1-4

Don | 1-3-4

-5 T+S

-6 +

Hel | 1-2-4 1-4 2-3

-7 +

IPEXTREME=No, Persons and items with extreme scores (here in red) placed at their estimated measures on the map.

Here, T1MWE=Yesand UEXTREME=Yes Items and persons with extreme scores are included in the Mean computation. Extreme items are now included in UIMEAN=0.

MEASURE KID - MAP - TAP

6 + 4-1-3-

5 + 1-3-2- 1-4-2- 1-4-3-

4 T+

Ric Sus | 1-4-2-

3 Fra +

2 Ber Bet Els Tho S+ 1-3-2- 1-4-3-

1 Bri Car Dav Joe Zul + 1-3-1-

0 +M <- UIMEAN=0 UEXTREME=Yes T1MWE=Yes

Ann Aud Bar Dor Jam Kim Lin Mik Ron Tra Wal Wil M|

-1 +

Jan Lis Rod | 2-4-3-

-2 Bre Pet +

S| 1-4-2-

-3 Ada Ric +

Bla Mar | 1-3-2- 3-4-1

-4 +S 1-4-3- 2-1-4

Don | 1-3-4

-5 T+

-6 +

Hel | 1-2-4 1-4 2-3

-7 +

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Rasch Models: Foundations, Recent Developments, and Applications, Fischer & Molenaar	Probabilistic Models for Some Intelligence and Attainment Tests, Georg Rasch	Rasch Models for Measurement, David Andrich	Constructing Measures, Mark Wilson	Best Test Design - free, Wright & Stone Rating Scale Analysis - free, Wright & Masters
Virtual Standard Setting: Setting Cut Scores, Charalambos Kollias	Diseño de Mejores Pruebas - free, Spanish Best Test Design	A Course in Rasch Measurement Theory, Andrich, Marais	Rasch Models in Health, Christensen, Kreiner, Mesba	Multivariate and Mixture Distribution Rasch Models, von Davier, Carstensen
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IPEXTREME= placement of extreme scores on maps = Yes

Questions, Suggestions? Want to update Winsteps or Facets? Please email Mike Linacre, author of Winsteps mike@winsteps.com