UANCHOR= anchor values supplied in user-scaled units = Yes

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For backwards compatibility only. This simplifies conversion from previously computed logit measures to user-scaled measures.

 

If UASCALE<>0.0 then UANCHOR=A is forced.

If UASCALE=0.0 then UANCHOR=N is forced.

 

UANCHOR=A or N or L specifies that the anchor values are in UASCALE= units per logit. Reported measures, however, will be user-rescaled by UMEAN= (or UIMEAN= or UPMEAN=) and USCALE=.

 

UANCHOR=Y specifies that anchor values are in USCALE= units per logit.

 

Example 1:        Your item bank calibrations are user-scaled with 10 units per logits, but you want to report person measures in CHIPS (BTD p.201):

       UASCALE=10                ; user-scaling of anchor values

       UANCHOR=A

       USCALE=4.55

 

Example 2:        Your previous test was in logits, but now you want the user-scaling 100 per logit.

       UASCALE=1                ; user-scaling of anchor values: logits

       UANCHOR=Logits

       USCALE=100


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