Factor analysis is a statistical technique widely used in research to understand and evaluate the underlying structure of assessment data. In fields such as education, psychology, and medicine, this approach to unsupervised machine learning helps researchers and educators identify latent variables, called factors, and which items or tests load on these factors. For instance, when […]
Digital assessment (DA) aka e-Assessment or electronic assessment is the delivery of assessments, tests, surveys, and other measures via digital devices such as computers, tablets, and mobile phones. The primary goal is to be able to develop items, publish tests, deliver tests, and provide meaningful results – as quickly, easily, and validly as possible. The […]
A z-score measures the distance between a raw score and a mean in standard deviation units. The z-score is also known as a standard score since it enables comparing scores on various variables by standardizing the distribution of scores. It is worth mentioning that a standard normal distribution (also known as the z-score distribution or […]
Digital badges (aka e-badges) have emerged in today’s digitalized world as a powerful tool for recognizing and showcasing individual’s accomplishments in an online format which is more comprehensive, immediate, brandable, and easily verifiable compared to traditional paper certificates or diplomas. In this blog post, we will delve into the world of digital badges, explore best […]
Samejima’s (1969) Graded Response Model (GRM, sometimes SGRM) is an extension of the two parameter logistic model (2PL) within the item response theory (IRT) paradigm. IRT provides a number of benefits over classical test theory, especially regarding the treatment of polytomous items; learn more about IRT vs. CTT here. What is the Graded Response Model? […]
Even those ones who do not consider themselves technology buffs have heard about ChatGPT. Today, everybody is talking about ChatGPT—a modern megastar of artificial intelligence (AI) and machine learning (ML) industries. This is how ChatGPT introduces itself: “I am an AI language model called ChatGPT. My purpose is to assist and communicate with users through […]
Artificial intelligence (AI) is poised to address some challenges that education deals with today, through innovation of teaching and learning processes. By applying AI in education technologies, educators can determine student needs more precisely, keep students more engaged, improve learning, and adapt teaching accordingly to boost learning outcomes. A process of utilizing AI in education […]
Gamification in assessment and psychometrics presents new opportunities for ways to improve the quality of exams. While the majority of adults perceive games with caution because of their detrimental effect on youngsters’ minds causing addiction, they can be extremely beneficial for learning and assessment if employed thoughtfully. Gamification does not only provide learners with multiple […]
Meta-analysis is a research process of collating data from multiple independent but similar scientific studies in order to identify common trends and findings by means of statistical methods. To put it simply, it is a method where you can accumulate all of your research findings and analyze them statistically. It is often used in psychometrics […]
Test validation is the process of verifying whether the specific requirements to test development stages are fulfilled or not, based on solid evidence. In particular, test validation is an ongoing process of developing an argument that a specific test, its score interpretation or use is valid. The interpretation and use of testing data should be […]
