Can I use a ready-made questionnaire to conduct an oral survey an at the same time make adjustments like changing the scale to a simple yes/no answer.

01 January 1970 5,939 4 View

Rasch analysis in R: No items with appropriate response patterns left to perform LR-test! - What can I do?

Hello everyone, I am currently dealing with psychometric evaluation of the croatian translation of a scale to assess chronic stress. The scale has nine dimensions and I am estimating PCM for...

22 September 2020 4,793 1 View

How can someone claim that a psychometric scale is linear/interval scale? How can you measure this linearity?

If I understood correctly, there are some ways to test if a scale is an "interval type," such as Rasch analysis. However, it is not clear to me on what basis this distinction is made. (e.g. Is the...

29 January 2020 5,131 6 View

Can I use Item Response Theory (IRT) on a formative measurement model?

I have a measurement where the indicators influence/give rise to the construct. This makes it formative, however, I don't think I can apply IRT on formative measurement models. Can anyone confirm...

07 August 2019 4,146 3 View

How to test reliability by rasch analysis?

By rasch analysis reliability for a survey instrument can be tested. How to do that?

11 December 2018 8,960 0 View

How to test reliability by rasch analysis?

By rasch analysis reliability for a survey instrument can be tested. How to do that?

11 December 2018 6,724 0 View

Algorithms of Matlab for grayscale image?

I am studying architecture so I am not familiar with algorithms so much .my thesis research consists process image processing and I need to convert my RGB image to grayscale by previous and...

09 October 2018 4,054 6 View

How can I run Rasch analysis (R command) in SPSS?

Hi, I'm working with SPSS22 and want to run Rasch analysis in SPSS. I installed the required R software (R 2.15.0) and required essential for R plugin. However, when I go to analysis>scale>Rasch...

06 July 2018 3,252 6 View

How to do ordinal-to-interval conversion for Rasch model?

Dear respectful scholars, I had a manuscript submitted to a journal. My reviewer said I need to generate ordinal-to-interval conversion algorithms based on person estimates of the model to...

06 July 2018 3,423 2 View

Can anyone suggest an easy to use software for IRT and Rasch analysis that could read data from SPSS?

Many softwares for IRT and Rasch analysis could not read data from SPSS (or maybe I cant do that), that is a great limitation. Would anyone suggest an easy to use and excellent software for IRT...

05 June 2018 1,270 5 View

Does Rasch model work on students score assessment for all subject areas?

I think, it works for all subject areas but the study modules should be aligned with the assessment questionnaires or the data.

03 April 2018 5,841 4 View