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Cycads evolved during the Triassic.
Research Assistant
An individual who provides administrative or technical support to professionals conducting scientific studies, often helping with data collection and analysis.
Internal Validity
The extent to which a study can rule out or make unlikely alternative explanations of the results, indicating that the causal relationship being tested is trustworthy.
Construct Validity
The degree to which a test or instrument accurately measures the theoretical construct it is intended to measure.
Low Construct Validity
When a test or tool does not accurately measure the theoretical concept it is intended to measure.
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