Which concept focuses on the trustworthiness of the assessment results?

The correct answer is focused on the concept of reliability, which is the degree to which assessment results yield consistent and stable scores across different instances of testing or assessment situations. Reliability is crucial in ensuring that repeated measurements will produce similar outcomes; this consistency enhances the trustworthiness of the results. When an assessment is reliable, educators can be more confident that the scores reflect the true performance or understanding of the students rather than random errors or fluctuations.

In educational assessment, reliability is measured in various ways, including internal consistency, test-retest reliability, and inter-rater reliability, all of which help verify that the results can be depended upon over time and across different contexts.

While validity refers to whether an assessment measures what it is intended to measure, using the results accurately still requires a reliable assessment. Informality speaks to the types of assessments used (like observations or casual check-ins), which may not inherently convey trustworthiness. Authenticity relates more to the relevance and real-world applicability of the assessment tasks rather than their consistency or reliability. Thus, the emphasis on reliability is about ensuring that the results can be believed and depended upon in making educational decisions.