Hello. I think "Using R for psychology research" maybe useful for you. http://www.personality-project.org/r/r.guide.html
On 9/19/07, Doug Holton <[EMAIL PROTECTED]> wrote: > Hi, > What package would you recommend for analyzing the > validity/reliability of multiple choice tests. Doing things such as > classical test analysis, factor analysis, item response theory. > > I've used psychometric (item.exam), MiscPsycho (alpha.Summary), and ltm > (rcor.test). MiscPsycho reported the numbers most similar to what I get > in SPSS: corrected point biserial correlations, cronbach's alpha. I > didn't understand what the psychometric package meant by its > "discrimination" and "item reliability" numbers output by the item.exam > function. Perhaps the former is uncorrected point biserial > correlations? They were higher values. I downloaded and inspected > the source code for both packages. It was hard to understand what the > functions were doing without some comments in the code. > > Also, would you recommend a book or resource with examples of using R > for test analysis. > > Thank you, it's been great learning R, > -Doug > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- CH Chan Research Assistant - KWH http://www.macgrass.com ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
