[Rasch] Specificity of Facets

Shirin Shirazi shirin.shirazi at gmail.com
Thu Mar 2 20:33:45 AEDT 2017


Dear Dr Linacre and Dear Edward,

I really appreciate your answers. Perhaps I could not convey what I am getting at. 
The question is "can we run facets (for DIF for example) without having any rater-mediated questions?" The test includes MC questions containing either 4, 5 or 6 options. 

Best regards,

Sent from my iPhone

> On Mar 2, 2017, at 1:05 AM, Edward Li <edwardfli at hotmail.com> wrote:
> 
> If you are trying to access the potential bias in questions, a DIF analysis is the first thing came to my mind.
> Cheers,
> Edward
> 
> On 2 Mar. 2017 6:01 am, Shirin Shirazi <shirin.shirazi at gmail.com> wrote:
> Dear Rasch Experts,
>  
>  
>  
> The impetus for asking this question is that I have been thinking of the possibility of assessing reading comprehension questions in the format of Multiple choice to find bias of facets (examinees, text type/genre, number of items, field of study, age, length of the passage) through MFRM knowing that the raters do not have a say in MC type in the assessment procedure due to the objectivity of scoring, hence I am wondering another measurement technique should be taken to find it?  
> As a matter of course, I would hesitate to use either Facets or Winsteps to find the biases induced by the above-mentioned facets?
>  
> Your help for my briefing will be highly appreciated. In advance, I express my gratitude for tolerating to read such a weird question.
> 
> 
>  
> Great Regards,
>  
> 
> 
> 
>  
> Shirin 
> PhD in TEFL, Assistant Professor
> 
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