Category Archives: Praxes

Compressing Google Earth files with is not well documented on the Web, so I thought I should share my approach. I am working on my presentation for the upcoming Minnesota Assessment Conference. I will be presenting geographic maps of 2010 … Continue reading →

The Early Childhood Environment Rating Scale (Revised; ECERS-R) was designed to measure process quality in child care centers, but the data set that I have been analyzing contains ratings of center classrooms and family child care (FCC) homes. A sizable … Continue reading →

I followed up the exploratory factor analysis (EFA) of the Early Childhood Environment Rating Scale (ECERS-R) with a confirmatory model comparison of the six-, two-, and one-factor solutions. The six-factor specification adhered to the original subscales in the ECERS-R instrument … Continue reading →

The Early Childhood Environment Rating Scale, revised edition (ECERS-R; Harms, Clifford, & Cryer, 1998), is an instrument used widely to observe and rate levels of process quality in child care centers. The authors have divided the instrument into six subscales … Continue reading →

My last post described how test development designs could be thought of as multistage sampling designs and how multilevel Rasch could be used to estimate parameters under that assumption. I decided to use to compare estimates from the usual Rasch … Continue reading →