ASC’s Blog: Resources on Assessment, Psychometrics, & Edtech
ASC continually posts new resources and articles on our blog, covering industry news, scholarly conferences, and discussions of important psychometric concepts. See the most recent articles in the blog below.
The IACAT Journal: JCAT
Do you conduct adaptive testing research? Perhaps a thesis or dissertation? Or maybe you have developed adaptive tests and have…
Seguridad en exámenes y pruebas en línea
La seguridad y validez de las pruebas y exámenes en línea son extremadamente importantes. La pandemia COVID-19 cambió drásticamente todos…
¿Qué es la vigilancia (proctoring) en línea?
La vigilancia en línea existe desde hace más de una década. Pero dado el reciente brote de COVID-19, las instituciones…
IRT Test Information Function
The IRT Test Information Function is a concept from item response theory (IRT) that is designed to evaluate how well…
What Is The Standard Error of Measurement?
The standard error of measurement (SEM) is one of the core concepts in psychometrics. One of the primary assumptions of…
Question Banks: An Introduction
What is a question bank? A question bank refers to a pool of test questions to be used on various assessments across time. ..
Psychometrist: What do they do?
A psychometrist is an important profession within the world of assessment and psychology. Their primary role is to deliver and…
What is Classical Item Difficulty (P Value)?
One of the core concepts in psychometrics is item difficulty. This refers to the probability that examinees will get the item correct…
Item Banks: 6 Ways To Improve
The foundation of a decent assessment program is the ability to develop and manage strong item banks. Item banks are…
Responses in Common (RIC) Index
This collusion detection (test cheating) index simply calculates the number of responses in common between a given pair of examinees. …
Exact Errors in Common (EEIC) collusion detection
Exact Errors in Common (EEIC) is an extremely basic collusion detection index simply calculates the number of responses in common…
Errors in Common (EIC) Exam Cheating Index
This exam cheating index (collusion detection) simply calculates the number of errors in common between a given pair of examinees. …
Harpp, Hogan, & Jennings (1996): Response Similarity Index
Harpp, Hogan, and Jennings (1996) revised their Response Similarity Index somewhat from Harpp and Hogan (1993). This produced a new…
Harpp & Hogan (1993): Response Similarity Index
Harpp and Hogan (1993) suggested a response similarity index defined as Response Similarity Index Explanation EEIC denote the number of…
Bellezza & Bellezza (1989): Error Similarity Analysis
This index evaluates error similarity analysis (ESA), namely estimating the probability that a given pair of examinees would have the…
Frary, Tideman, & Watts (1977): g2 Collusion Index
The Frary, Tideman, and Watts (1977) g2 index is a collusion (cheating) detection index, which is a standardization that evaluates…
Wollack 1997 Omega Collusion Index
Wollack (1997) adapted the standardized collusion index of Frary, Tidemann, and Watts (1977) g2 to item response theory (IRT) and…
Wesolowsky (2000) Zjk Collusion Detection Index
Wesolowsky’s (2000) index is a collusion detection index, designed to look for exam cheating by finding similar response vectors amongst…