Pedro Pires

5 Questions 27 Answers 0 Followers

Questions related from Pedro Pires

Item analysis and NA responses (not missing)?

So I have a data set where researchers opted to provide an answer type "not apply" for items that are not related in anyways to subject's activity being in inexistent - it represents an answer...

06 June 2017 744 9 View

Concerning the package pROC for R and ROC curve?

So there I was testing ROC for a scale to predict intellectual deficit as the scale tests for some basic skills. So what matters here is that as the scoring goes lower, there should be a higher...

03 March 2017 9,818 4 View

Concerning full SEM, dependent measures and IRT?

I was studying a little bit more SEM, specially considering full SEM, where you add latent variables with observable variables in structural modeling (more in terms of path analysis, not construct...

03 March 2017 7,623 2 View

Item and Test Information Function rule of thumb. Are there recommendations?

I've been working with IRT and usually I interpret the item information function and test information function based on the purpose of the measure I'm developing. A screening measure will most...

08 August 2016 8,623 6 View

Is there a way to calculate inter-rater reliability for individual items?

Survey design: - 15 raters. - more than 100 items. - answers in likert scale from 1-5 So, I'm not finding problems to get the inter-rater reliability through intra-class correlations on SPSS for...

10 October 2015 5,007 17 View