How do you know your variables are measuring what you think they are? And how do you know they’re doing it well?
[Read more…] about Member Training: Practical Advice for Establishing Reliability and Validity
by guest
How do you know your variables are measuring what you think they are? And how do you know they’re doing it well?
[Read more…] about Member Training: Practical Advice for Establishing Reliability and Validity
by Audrey Schnell, PhD
Some variables are straightforward to measure without error – blood pressure, number of arrests, whether someone knew a word in a second language.
But many – perhaps most – are not. Whenever a measurement has a potential for error, a key criterion for the soundness of that measurement is reliability.
Think of reliability as consistency or repeatability in measurements. [Read more…] about What Is Reliability and Why Does It Matter
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