One of the core concepts in psychometrics is item difficulty. This refers to the probability that examinees will get the
It’s October 30, 2017, and collusion is all over the news today… but I want to talk about
If you deal with data science on a daily basis, which psychometrics most definitely is, you’ve probably used
In the past decade, terms like machine learning, artificial intelligence, and data mining are becoming greater buzzwords as computing
An emerging sector in the field of psychometrics is the area devoted to analyzing test data to find
Last week, I had the opportunity to attend the 2017 Conference on Test Security (COTS), hosted by the
The British statistician George Box is credited with the quote, “All models are wrong but some are useful.”
Cognitive diagnostic models are an area of psychometric research that has seen substantial growth in the past decade,
I recently received a email from a researcher that wanted to implement item response theory, but was not sure
Guttman errors are a concept derived from the Guttman Scaling approach to evaluating assessments. There are a number
