Certification exams are a critical component of workforce development for many professions and play a significant role in the global Testing, Inspection, and Certification (TIC) market, which was valued at approximately $359.35 billion in 2022 and is projected to grow at a compound annual growth rate (CAGR) of 4.0% from 2023 to 2030. As such, […]
A T Score is a conversion of scores on a test to a standardized scale with a mean of 50 and standard deviation of 10. This is a common example of a scaled score in psychometrics and assessment. A scaled score is simply a way to present scores in a more meaningful and easier-to-digest context, […]
The Spearman-Brown formula, also known as the Spearman-Brown Prophecy Formula or Correction, is a method used in evaluating test reliability. It is based on the idea that split-half reliability has better assumptions than coefficient alpha but only estimates reliability for a half-length test, so you need to implement a correction that steps it up to […]
Item writing (aka item authoring) is a science as well as an art, and if you have done it, you know just how challenging it can be! You are experts at what you do, and you want to make sure that your examinees are too. But it’s hard to write questions that are clear, reliable, […]
Validity threats are issues with a test or assessment that hinder the interpretations and use of scores, such as cheating, inappropriate use of scores, unfair preparation, or non-standardized delivery. It is important to establish a test security plan to define the threats relevant for you and address them. Validity, in its modern conceptualization, refers to […]
Item review is the process of ensuring that newly-written test questions go through a rigorous peer review, to ensure that they are high quality and meet industry standards. What is an item review workflow? Developing a high-quality item bank is an extremely involved process, and authoring of the items is just the first step. Items […]
Likert scales (items) are a type of item used in human psychoeducational assessment, primarily to assess noncognitive constructs. That is, while item types like multiple choice or short answer are used to measure knowledge or ability, Likert scales are better suited to measuring things like anxiety, conscientiousness, or motivation. In the realm of psychology, surveys, […]
Stackable credentials refer to the practice of accumulating a series of credentials such as certifications or microcredentials over time. In today’s rapidly evolving job market, staying ahead of the curve is crucial for career success. Employers are increasingly looking for candidates with a diverse set of skills and qualifications. This has given rise to the concept […]
Test blueprints, aka test specifications (shortened to “test specs”), are the formalized design of an assessment, test, or exam. This can be in the context of educational assessment, pre-employment, certification, licensure, or any other type. Generally, the amount of effort and detail is commensurate with the stakes of the assessment; a 10 item quiz for […]
Testlet is a term in educational assessment that refers to a set of test items or questions grouped together on a test, often with a common theme or scenario. This approach aims to provide a more comprehensive and nuanced assessment of an individual’s abilities compared to traditional testing methods. What is a testlet? As mentioned […]
