Validity & reliability an interesting powerpoint slide i created

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This document discusses the importance of validity and reliability in testing. It provides an example of a weighing test to question validity, noting that environment, respondent, and test administration can affect reliability. Both validity and reliability are important for a good test, which requires balancing these factors. Teachers should understand both concepts when creating assessments.

Education

VALIDITY

It says
I’m
160cm. Really?

Is the weighing test above
valid?

Environment
Test

Respondent

Affect Reliability

One more thing…
• Both validity and reliability are important
• Teachers should be clear on both
• A good test = balance of both

REFERENCE
• Brown, H. D. & Abeywickrama, P. (2010)
Language assessment: principles and
classroom practices (2nd ed.).NY: Pearson
Longman.

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