Reliability vs. Validity

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Reliability vs. Validity
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Reliable means you will get the same results
repeatedly. (R Reliability Repeated)
Increased with more trials
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Have I tested with repetition?How consistent is
the information with information from other
reputable sources?
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Valid means accurate or on target. The
measurement taken matches the actual amount.

• Adding more controlled variables Improving
  measuring technique Including more conditions
  an experimental control condition.

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Does my procedure experiment actually test the
hypothesis that I want it to? What variables have
I identified and controlled?
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These targets show one way to interpret
reliability vs. validity. Draw/label them
under your notes!