A test taker can get the same score no matter how, where, or when they take it, within reason. For an exam or an assessment to be considered reliable, it must exhibit consistent results. What is test reliability?įirst, reliability refers to how dependably or consistently a test measures a certain characteristic. As an exam designer, it is crucial to understand the differences between reliability and validity. These terms are closely related, but distinct in meaningful ways when referring to exam efficacy.
We also take a look at the value of data analysis, psychometrics, and the ways in which an exam designer can ensure that their test is both reliable and valid for their situation. In this blog, we dive into the differences between test validity and reliability and how they can affect student learning outcomes. affecting access to further education), thus the validity of assessments are highly important” ( 2011). Yet, educational outcomes can have high stakes in terms of consequences (e.g. It is essential that exam designers use every available resource-specifically data analysis and psychometrics-to ensure the validity of their assessment outcomes.Īccording to Stuart Shaw and Victoria Crisp, “Measuring the traits or attributes that a student has learnt during a course is not like measuring an objective property such as length or weight measuring educational achievement is less direct. Poorly written assessments can even be detrimental to the overall success of a program. When it comes to test validity, invalid or unreliable methods of assessment can reduce the chances of reaching predetermined academic or curricular goals. How can you measure test validity and reliability? | Turnitin Manuscript with arrow icon Book and magnifying glass icon Cross-check icon Process checklist icon Reputation ribbon icon Graduation cap icon Question speech bubble icon Headset call icon Mobile phone call icon Login arrow icon B+ Paper Icon Becoming B+ Paper Icon Checkmark Paper Icon Feedback Speech Bubble Icon Feedback Double Speech Bubble Icon Similarity Check Icon Professional Development Icon Admin Training Icon Instructor Training Icon Student Training Icon Integrations Icon System Status Icon System Requirements Icon Menu Icon Checkmark Icon Download Icon Rubric Icon Prompt Icon QuickMark Set Icon Lesson Plan Icon Success Story Icon Infographic Icon White Paper Icon White Paper Icon Press Release Icon News Story Icon Event Icon Webcast Icon Video Icon Envelope Icon Plaque Icon Lightbulb Icon Insights Lightbulb Icon Training Icon Search Icon User Icon Privacy Icon Instructor Icon Instructor-1 Icon Investigator Icon Admin Icon Student Icon Voice Grammar Icon Turnitin Logo (Text and Icon) Icon pre-2021 Turnitin Logo (Text and Icon) Icon Facebook Icon Twitter Icon LinkedIn Icon Google Plus Icon Lightbulb Icon Binoculars Icon Drama Masks Icon Magnifying Glass Icon Signal Check Indicator Bars Red Flag Icon Analysis and Organization Icon
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