What are reliability and validity in the context of literacy assessments?

What are reliability and validity in the context of literacy assessments?

• A. Reliability measures consistency of scores; validity measures whether the test measures what it intends to measure.
• B. Reliability measures measurement accuracy over time.
• C. Validity measures how interesting the test is.
• D. Reliability measures consistency of scores across administrations.

Answer: (C)

Reliability and validity are about how well a literacy assessment performs as a measure. Reliability means the results are consistent: a student would get similar scores if the test were taken again or if different items aimed at the same skill produced similar results. Validity asks whether the test actually measures the literacy skills it’s supposed to measure—does it tap into the intended constructs like reading comprehension, fluency, or decoding, and do the scores reflect those skills? The idea that validity is about how interesting the test is isn’t about measurement accuracy; engagement or enjoyment doesn’t determine whether the test assesses the right skills. Reliability can involve consistency across administrations, but that’s only one aspect of reliability; it also includes how consistently the items within the test work together, among other forms. So the best takeaway is: reliability = consistency of scores; validity = whether the test measures what it intends to measure.

Reliability and validity are about how well a literacy assessment performs as a measure. Reliability means the results are consistent: a student would get similar scores if the test were taken again or if different items aimed at the same skill produced similar results. Validity asks whether the test actually measures the literacy skills it’s supposed to measure—does it tap into the intended constructs like reading comprehension, fluency, or decoding, and do the scores reflect those skills?

The idea that validity is about how interesting the test is isn’t about measurement accuracy; engagement or enjoyment doesn’t determine whether the test assesses the right skills. Reliability can involve consistency across administrations, but that’s only one aspect of reliability; it also includes how consistently the items within the test work together, among other forms.

So the best takeaway is: reliability = consistency of scores; validity = whether the test measures what it intends to measure.