Reposted by Damian Betebenner
onlinelibrary.wiley.com/doi/full/10....
Out now! @derekbriggs.bsky.social, Laurie Davis and I investigate differences in how much students appear to grow on a vertical scale based solely on the grade alignment of (a large number of) common items. Turns out, the differences are pretty big!
onlinelibrary.wiley.com
Growth across Grades and Common Item Grade Alignment in Vertical Scaling Using the Rasch Model
Vertical scales are frequently developed using common item nonequivalent group linking. In this design, one can use upper-grade, lower-grade, or mixed-grade common items to estimate the linking const...
